Overload Protection Clutches - Sprockets Oz … · company moved into production of inverted tooth...

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Overload Protection ClutchesOPC2009

30088 Cross&Morse Overload Protection Clutches Brochure.qxd:aSC1 pp01.qxd 23/1/09 11:41

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The Company

T.D. Cross Ltd., reserve the right to change without notification dimensional and/or product specification shown in this catalogue, and to add or delete any product fromthe range in the interests of product development.All products shown in this catalogue are offered subject to the standard “Terms and Conditions of Sale”, copies on request. T.D. Cross Ltd., reserve copyright of thiscatalogue. No part thereof may be reproduced without prior permission.

Cross & Morse was established in 1984 through the amalgamation of two long standing and well respectedcompanies in the Power Transmission Industry, T.D. Cross and Morse Chain.

T.D. Cross & Sons was founded in 1870 in Birmingham, concentrating in the production of bicycle components underthe direction of the Cross family. They moved to the current factory site in 1950 and developed into production of apopular range of roller chain sprockets and gearing. The competitive pricing and quality of product soon establishedthe Company as a major supplier to both Agricultural and Industrial markets.

The Morse Chain Company was founded in 1894 also for the manufacture of bicycles in Pennsylvania, U.S.A. Thecompany moved into production of inverted tooth chain drives and established a manufacturing plant in London in1907, moving to the new Garden City of Letchworth, Herts. in 1918. The product range in the U.K. was developed toinclude Roller Chain and Sprockets, Couplings, Torque Limiters, Sprag Clutches and Timing Belt Drives, whilst in theU.S.A. by acquisition Morse also included the Denver Gearbox Range and the Sealmaster Bearing Products.

In 1987 Cross & Morse closed the Letchworth plant and centralised all production at the 10,000 sq. metre factory inGreat Barr, Birmingham where current production of Roller Chains, Sprockets, Gears, Timing Belt Pulleys, TorqueLimiters, Sprag Clutches and other specialised power transmission equipment is undertaken. In addition tomanufactured products, Cross & Morse are main agents for Morse-Emerson, U.S.A.; and Stieber Formsprag,Germany; providing an extensive range of power transmission products.

The company operates a policy of continued assessment to develop and improve its products and customer service.In pursuance of these objectives Cross & Morse has been successfully assessed by Lloyds, and is registered, as anapproved manufacturer of power transmission products to BS EN ISO 9001.

Roller Chain Drives Timing Belt Drives

Inverted Tooth Drives

Overload Clutches

Freewheel Clutches

Shaft Clamping Elements Sealmaster Bearings

Gears

Torque Limiters

Shaft Couplings

30088 Cross & Morse Cat. Master:30088 Cross & Morse Cat. Master 23/1/09 11:25 Page 1

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Index

1

Overload Protection and Coupling Products

Contents Page

Types of Overload Protection 2

Torque Limiters 3Morse Torque Limiter Dimensions 4Metric Torque Limiter Dimensions 5Torque Limiter Selection 6Standard Torque Limiter Platewheels 7Torque Limiter Couplings 8

Sheargard Clutch 9/10Sheargard Couplings 11Sheargard Clutch Wedge Pin Ratings and Installation 12

Crossgard Overload Clutches 13/14Crossgard Type CG Clutch 15Crossgard Type CG Couplings 16/17Crossgard Type CGX Clutch 18Crossgard Type CGX-C Couplings 19Crossgard Type CGZ Clutch 20Crossgard Type CGZ Couplings 21

Safegard Type CS Overload Clutches 22/23Safegard Type CS Standard Series 24Safegard Type CS Standard Couplings 25Safegard Type CS Mini Series 26Safegard Type CS Mini Couplings 27

Safegard Type CZ/CN Overload Clutches 28/29Safegard Type CZ Clutch Dimensions 30/31Safegard Type CZ Coupling Dimensions 32/33Safegard Type CN Clutch Dimensions 34-35Safegard Type CP Pneumatic Controlled Clutches 36

T.D. Cross Ltd., reserve the right to change without notification dimensional and/or product specification shown in this catalogue,and to add to or delete any product from the range in the interests of product development.All products shown in this catalogue are offered subject to the standard “Terms and Conditions of Sale”, available on request.T.D. Cross Ltd., reserve copyright of this catalogue. No part thereof may be reproduced or republished without priorwritten permission. This catalogue and the information contained herein replaces and supersedes all previous catalogues issuedby T.D. Cross Ltd.


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DRIVE SYNCHRONISATION

DRIVE DISENGAGEMENT

RESETTING METHOD

BACKLASH

OVERLOAD INDICATOR

CAN PROVIDE SOFT START

SET TORQUE ACCURACY %

SHAFT RANGE mm

MAX. TORQUE Nm

MAX SHAFT SPEED rpm

NO

NO

AUTO

NONE*

NONE

YES

15%

5-120

10000

3000

YES

YES

MANUAL

NONE

OPTIONAL

NO

10%

10-215

125000

1500

YES

1 REV

AUTO

MINIMAL

YES

NO

10%

8-130

7154

700

YES

1 REV

AUTO

NONE*

YES

NO

3%

7-70

785

1400

YES

YES

MANUAL

MINIMAL

YES

NO

10%

8-50

450

1800

NO

RATCHET

AUTO

MINIMAL

YES

NO

10%

7-110

8200

3300

YES

NO

AUTO

MINIMAL

YES

NO

10%

7-110

8200

4000

YES

1 REV

AUTO

MINIMAL

YES

NO

10%

7-110

8200

1000

YES

YES

MANUAL

MINIMAL

YES

NO

10%

7-110

4400

5000

NO

TEMP

AUTO

NONE*

YES

NO

5%

6-60

740

4000

YES

1 REV

AUTO

NONE*

YES

NO

5%

6-60

740

4000

YES

1 REV

PNEU

NONE*

YES

NO

5%

8-55

550

5000

CROSSGARD CGpp15-17

Cross & Morse Overload ClutchesAll Cross & Morse protection devices are available as shaft mount units for mounting sprockets, pulleys or gears, or as couplings for shaft to shaft connection. The basic features of the units offered are as shown in the table below. For detailed design specification and selection of units refer to catalogue pages of the relevant series.

FRICTION TYPE CONSTANT DRIVE

MECHANICAL SHEAR PIN TYPE ZERO BACKLASHVERY HIGH TORQUES

LOW COSTROBUST DESIGN

ZERO BACKLASH

HIGH PRECISIONSYNCHRONISED DRIVE

COMPACT UNITS

HIGH SPEEDNON SYNCHRONISED

FAST RESET

CROSSGARD CGX PP18-19

SAFEGARD CZY PP28-33

SAFEGARD CNY PP34-35

CROSSGARD CGZPP20-21

SAFEGARD CSZPP22-25

SHEARGARDpp9-12

ELECTRICAL

CONSTANT TORQUEVERY LOW COSTROBUST DESIGN

TORQUE LIMITER pp3-8

SAFEGARD CZF pp28-33

SAFEGARD CNF PP34-35

SAFEGARD CSF pp22-27

HIGH SPEEDNON SYNCHRONISED

FAST RESET

BALL OR ROLLERDETENT

RELEASE TYPE

CONSTANT DRIVEHANDLE HIGH INERTIA

VERY HIGH SPEEDIMMEDIATE DRIVE

SAFEGARD CSLpp22-25

CONTROLLED TORQUEREMOTE TORQUE

SETTING HIGH SPEEDHANDLE HIGH INERTIAS

SAFEGARD CPV/Wpp36

LOW BACKLASHSYNCHRONISED DRIVE

LOW COSTPOSITIVE RELEASE

SYNCHRONISED DRIVELOW COST

COMPACT UNITS

2

Overload Protection Devices

Development of manufacturing methods and production techniques has led to machinery and equipment beingmore automated, and systematically combined to provide the best material flow and production efficiency. In theseconditions any small accident which could damage either machinery or drive lines can result in extended downtimeof the total plant. Cross & Morse range of overload protection devices are designed to prevent damage of machineryor drive line in the event of an overload, so avoiding the need of costly repairs and minimising productiondowntime.

Several methods of overload protection are available, these being as classified below, all of which provide various levels ofprotection. Cross & Morse units are all of mechanical operation for minimum maintenance and simplicity of operation.

Classification of Overload Protection Types

OVERLOADPROTECTION

DEVICE

FEATURE TorqueLimiter Sheargard Crossgard

CGCrossgard

CGXCrossgard

CGZSafegard

CSFSafegard

CSLSafegard

CSYSafegard

CSZSafegardCZF/CNF

SafegardCZY/CNY

SafegardCPF/CPY

*Within Torque Range

SAFEGARD CSYpp22-27

TOTAL DRIVEDISENGAGEMENT

FAST RESPONSEVERY HIGH SPEED

MANUAL RESET

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Cross & Morse Torque Limiters

3

Cross & Morse Torque Limiters are low cost protection devices that limit torquein a drive system by slipping when a preset value is exceeded, in order to:-

Prevent machine and drive damage.Eliminate costly machine downtime.

Correct Spring Selection and RatingsTorque Limiter capacities are directly proportional tothe spring force applied to the friction surfaces and itis a simple matter to increase capacity by increasingspring force - but not without a sacrifice. The higherthe unit load or pressure (psi) on the frictionsurfaces, the quicker the friction facings willdeteriorate as they slip against the pressure plates andcentre member. Morse ratings are realistic and areconsistent with optimum spring loads and facepressures that permit longer slip time, maintain re-engagement at pre-set torque, and providelong-lasting protection.The spring is designed so that its force varies little overa wide deflection range at the rated capacity of thetorque limiter. This assures load re-engagement nearthe pre-set torque level as the friction facing wears.It is characteristic of a disc spring that it is moreunstable and erratic in the lower end of its load vs.deflection curve; Morse therefore establishedminimum torque ratings consistent with springcharacteristics.

Morse Torque Limiters incorporate design features for long life and reliability.

Cross & Morse Torque Limiters offer you the following Benefits:• Simple Design • Minimum Maintenance • Economical • Durable• Easy Adjustment • Corrosion Resistant • Compact • Low Cost• Wide Torque Range • Infinite Torque Adjustment Settings• DependableConclusionThe incorporation of an inexpensive Cross & Morse Torque Limiter improves machine design, safeguards production, and minimises the downtime so ensuring increased productivity and profits.

The Torque Limiter is a protective device that limitstorque transmitted in a drive system by slipping whena preset value is exceeded as a result of shock load,overload or machine jam. It automatically re-engages,when the overload is removed, no setting beingrequired, Torque is transmitted by spring loadedfriction faces, the value being preset by adjustment ofthe spring force by simple setting of the adjustmentnuts and bolts. The Torque Limiter is suitable to usewith sprockets, gears, pulleys or a flange plate as thecentre member clamped between the friction facings.The Torque Limiter is not a new product with Cross &Morse. In 1949 Morse introduced the first springloaded, friction type protective device which wasdeveloped to today’s line of products consisting of7 sizes, the models 200M to 700M being the mostpopular units. To further extend the capabilities of ourproducts a new metric series of clutches, consisting of 6sizes from M30 to M280 has been added, to cater forhigher torque applications, and areas where space islimited. As originator of the Torque Limiter, Morsegained vast experience in the design and application ofthese units as trouble free and long lasting protectivedevices. Many thousand units have been fitted toconveyors, mechanical handling equipment andagricultural machines.


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4

Standard Torque Limiters

Original Morse Series Torque LimitersDeveloped from the original Torque Limiters produced in 1949, these well proven units are based on Imperialdimensions. Imitated by many over the years these units provide the ideal low cost solution to overload protectionfor torques between 3 & 1500 Nm. For Torque Limiter selection refer to page 6.

*M1 Torque Limiters Fitted One Disc Spring. †Torque Limiter supplied standard without Bush, which is supplied with Platewheel.M2 Torque Limiters Fitted Two Disc Springs. If Bush required, specify on order which length (size) required.

For procedure to select Torque Limiters refer to page 6. (1) Sizes 13 & 20 Torque Limiters for replacement purposes onlyFor range of standard platewheels refer to page 7. Refer Metric sizes M200 - M280 for new applications.

Models 200M, 250M & 350M

Dimensions

Models 500M & 700M Models 13 & 20

*Model

Torquemin

Torquemax

Stockminplainbore

StockFinishbores

MaxBore

with StdKeyway

†Standard Bush Lengths (Ref.) SetScrew A

Nm Nm mm mm mm mm mm mm mm mm mm mm mm mm mm kg

B C(max)

D F G L MA/F

P Weight

200M1 3 13 19 (275, 365, 480, 551)9.5 22 M5 52 48 9 16 4.0 3.5 34.9 46 0.4

200M2 6 25 20 7.0, 9.5, 11.5, 13.4

250M1 7 34 15 (275, 365, 480, 551)9.5 19 22 M5 64 48 9 16 4.0 3.5 34.9 46 0.5

250M2 12 67 20 7.0, 9.5, 11.5, 13.4

350M1 20 100 20 (365, 480, 551, 628, 829)18 24 25 M6 89 62 16 19 4.0 3.5 42.9 60 1.1

350M2 34 200 25 9.5, 11.5, 13.4 16.0, 20.3

500M1 48 283 (480, 551, 628, 829)22 41 M8 127 76 16 22 6.5 3.5 63.5 - 92 3.0

500M2 88 566 11.5, 13.4, 16.0, 20.3

700M1 110 770 (520, 580, 667, 868, 966, 1187, 1375)24 64 M10 178 98 29 24 8.0 5.0 95.3 - 133 6.8

700M2 224 1540 13.2, 14.7, 16.9, 22.3, 24.6, 30.2, 34.9

13-8 (1) 678 1966 (375, 500, 562)38.1 82 - 330 146 22 36 9.5 4.8 114.3 - 279 38.6

13-16 (1) 1356 3120 9.5, 12.7, 14.3

20-5 (1) 2135 4270 (500, 625)50.8 124 - 508 184 24 46 12.5 4.8 165.1 - 413 115.0

20-10 (1) 4270 8540 12.7, 15.9

25 2830 3538 40

40 4548

50 60

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5

Standard Torque Limiters

Metric Series Torque LimitersTo extend the range of torque capability a new series of Torque Limiters is offered providing both smaller and largersized units with a range of 1.5 to 10,000 Nm. These units are all to metric dimensions, and as with the original seriesare available with a roller chain coupling for shaft to shaft connection. For Torque Limiter selection refer to page 6.

*Torque values can be halved by facing springs towards one another.†Torque values determined by positioning of springs, refer to drawings.(1)Torque Limiters with 1 & 2 springs can accommodate thicker platewheels, (up to 2mm max), but extra care must be exercised to ensure that bushsupports both friction facings, and use second bush if required.(2)Min. width can be reduced by reducing bush length.

Models M30

Dimensions

Models M40 & M45 Models M200/254/280

Model

Torquemin

Torquemax

Stockbore

Max Borewith Std Keyway A

Nm Nm mm mm mm mm mm mm mm mm mm mm mm kg

Bk7 CFBush

Length min max

G LH Approx.

Weight

M30-2 3* 10* 4.5 11 30 21 31 5.8 6.0(2) 7.2 2.5 9.0 18 0.10

M40-1 4 15

M40-2 7 28 7.0 14 40 26 28 7.0 3.5 5.0(1) 2.8 8.0 22 0.16

M40-3 10 40

M45-1 7 30

M45-2 13 55 7.0 20 45 35 33 8.8 4.5 5.8(1) 3.0 8.5 32 0.19

M45-3 17 70

M200-24(A)† 440 2200

M200-24(B)† 800 4000

M254-32(A)† 760 3800

M254-32(B)† 1350 6800

M280-32(A)† 1100 5500

M280-32(B)† 2000 10000

35.0 80 200 120 105 28.0 20.0(2) 22.0 5.0 27.0 110 16.50

48.0 90 254 140 120 31.8 23.8(2) 26.0 5.0 33.0 125 21.00

48.0 120 280 170 120 31.8 23.8(2) 26.0 5.0 33.0 155 26.00


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At MinimumTorque

6

Torque Limiters Selection

Selection Procedure

(1)Platewheels require recess to fit Torque Limiter.(2)Platewheels for BS series chains requires recess to fit Torque Limiter.(3)Bushes require shortening to length indicated.(4)Two bushes required to total length indicated.For standard stock platewheels refer to page 7.

DimensionsTorqueLimiterModel

Chain Size

ModelNo.

BoreDia.mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

SprocketMin.Teeth

BushLength

mm

3/8” 06B/35 1/2” 08B/40 5/8” 10B/50 3/4” 12B/60 11/4” 20B/100 11/2” 24B/120 13/4” 28B/140 2” 32B/1601” 16B/80

Maximum Operating RPM

50% PlusTorque Rating Over 5 min

kW Ratings according to max slip time

5 min 2 min 1 min 30 sec 10 sec

200M 1800 800 0.06 0.11 0.20 0.38 0.55 0.90250M 1450 430 0.08 0.16 0.30 0.56 0.80 1.30

350M 1050 280 0.19 0.37 0.70 1.30 1.85 3.00500M 750 250 0.47 0.93 1.70 3.25 4.65 7.50700M 530 200 1.02 2.04 3.80 7.15 10.20 16.30

M30 3000 310 0.01 0.02 0.04 0.07 0.10 0.16M40 2300 210 0.02 0.04 0.08 0.14 0.20 0.32M45 2000 140 0.03 0.05 0.10 0.18 0.25 0.40

M200 475 100 1.29 2.50 4.80 9.00 12.90 20.60M254 375 90 2.40 4.80 8.90 16.80 24.00 38.50M280 340 80 2.95 5.85 10.80 20.50 29.25 47.00

1. Determine if the Torque Limiter is to be mounted on input (driver) or output (driven) shaft. Mounting on input shaft isnormally lowest cost, and spreads load on Limiter body in overload slip, but if frequent slip occurs longer wear life of friction facings is obtained with the Torque Limiter on the output shaft.

2. Determine normal Drive Torque from input Power and Shaft Speed using formulae:-

Torque Nm = H.P. x 7124 Torque Nm = kW x 9550R.P.M. R.P.M.

3. Decide on required Slip Torque, normally between 1.2 and 1.5 times Drive Torque dependant on frequency of machinestop-start cycles.

4. Refer to pages 4 and 5, select size of Torque Limiter where Rated Torque slightly exceeds Slip Torque. Confirm SelectedTorque Limiter will accept drive shaft diameter.

5. Using capacity below, confirm selection of Torque Limiter. For machines under constant supervision or with motor overload sensors the 10 sec values should be used. For unmanned machines combination of torque and speedshould always be within power ratings over 5 min to avoid deterioration of components parts due to temperaturebuild-up. If necessary a larger Torque Limiter may have to be selected to provide sufficient heat dissipation.

6. Check Sprocket Tables below, to ensure that required size will fit selected Torque Limiter.

200M 41.3341.38 21 (365)

9.5 17 (480)11.5 14 (551)

13.4

250M 41.3341.38 25 (365)

9.5 20 (480)11.5 16 (551)

13.4

350M 49.2849.33 33 (365)

9.5 26 (480)11.5 21 (551)

13.4 18 (628)16.0 15 (829)

20.3

500M 73.1073.15 35 (480)

11.5 29 (551)13.4 25 (628)

16.0 19 (829)20.3

700M 104.88104.93 48 (520)

13.2 39 (580)14.7 33 (667)

16.9 25 (868)22.2 21 (966)

24.6 18 (1187)30.2 16 (1187)

30.2 15 (1375)34.9

13- 161.99162.05 44 (375)

9.5 36 (500)12.7 31 (562)

14.3 27 (562)14.3 24 (562)

14.3

20- 222.33222.40

M30 21.1021.05 14 4.5(3) 12 6.0

M40 26.1026.05 17 8.0 14 8.0

M45 35.1235.07

M200 120.18120.10

M254 140.20140.12

M280 170.20170.12

19 9.0 15 9.0

43 15.5(3) 36 17.0(3) 28 22.5(3) 23 25.0(3) 20 29.0 17 29.0(1) 15 29.0(1)

45 17.0(3) 35 22.5(3) 29 25.0(3) 24 31.8 21 31.8(2) 19 35.0(4)

50 17.0(3) 38 22.5(3) 31 25.0(3) 26 31.8 23 31.8(2) 21 35.0(4)

54 (500)12.7 46 (625)

15.9 40 (625)15.9 35 (625)

15.9

Note: If your drive requirements do not permit selection of a Standard Torque Limiter by the above procedurecontact Technical Department, Cross & Morse.

Minimum Sprocket Teeth and Bush Lengths for BS and ANSI Roller Chains

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7

Torque Limiters Platewheels

Morse recommend and offer as stockitems, specially machined platewheelsfor use with Torque Limiters. Both facesof Morse Torque Limiter Platewheelsare machined to 1.6µm surface finish.Uniform surfaces and parallel facesensure that Morse Torque Limiters willreliably maintain correct torque releaseand re-engagement. For the mosteconomical drive design, select aplatewheel from the increased range ofstandard stock platewheels.

Stock Machined Platewheels for BS Roller Chain

Torque Limiters are suitable for running in oil. As a general rule the torque capacity will be reduced to .25 of thestated torque when using SAE 30 oil. Torque Limiters to run in oil should have the friction facings soaked in oilbefore assembly.

FitsTorqueLimiterNumber

CatalogueNumber

ChainPitch

inches

Numberof

Teeth

OutsideDiameter

mm

Bore Dia.over

Bushingmm

Max.Width

mm

BushSize

BushLength

mm

Weight

kg

For accurate torque setting andapplications where slippage may befrequent, it is essential that a groundplate sprocket is used. Rated torquecapacity can only be obtained with dryfriction facings and a ground platesprocket which has been run-in for 500revolutions at 50% maximum torquerating for the single spring unit at aspeed not exceeding 120 r.p.m.

M30 M30G06B1-16 0.375 16 52.3 21.1 5.33 5.0 0.06M30G06B1-19 0.375 19 61.3 -0.05 5.33 5.0 0.09

M40 M40G06B1-19 0.375 19 61.3 26.1 5.33 7.0 0.09M40G06B1-22 0.375 22 71.0 -0.05 5.33 7.0 0.12

M45 M45G06B1-22 0.375 22 71.0 35.12 5.33 8.8 0.12M45G08B1-19 0.500 19 82.3 -0.05 7.24 8.8 0.18

200G06B1-21 0.375 21 67.8 41.38 5.33 365 9.5 0.11200M 200G06B1-23 0.375 23 73.5 -0.05 5.33 365 9.5 0.13

200G08B1-19 0.500 19 82.3 7.24 480 11.5 0.18

250G06B1-25 0.375 25 80.0 5.33 365 9.5 0.14250G06B1-38 0.375 38 119.4 5.33 365 9.5 0.36250G08B1-20 0.500 20 85.8 7.24 480 11.5 0.21250G08B1-21 0.500 21 90.4 7.24 480 11.5 0.23250G08B1-22 0.500 22 94.5 7.24 480 11.5 0.27250G08B1-23 0.500 23 98.5 7.24 480 11.5 0.32250G08B1-25 0.500 25 106.4 7.24 480 11.5 0.36

250M 250G08B1-30 0.500 30 127.5 41.38 7.24 480 11.5 0.54250G08B1-38 0.500 38 159.0 -0.05 7.24 480 11.5 0.91250G08B1-57 0.500 57 236.1 7.24 480 11.5 2.15250G10B1-19 0.625 19 104.1 9.02 551 13.4 0.41250G10B1-21 0.625 21 114.1 9.02 551 13.4 0.50250G10B1-23 0.625 23 124.2 9.02 551 13.4 0.64250G10B1-25 0.625 25 134.4 9.02 551 13.4 0.75250G10B1-38 0.625 38 199.6 9.02 551 13.4 1.78250G10B1-57 0.625 57 296.0 9.02 551 13.4 4.29

350G06B1-38 0.375 38 119.4 5.33 365 9.5 0.38350G08B1-27 0.500 27 114.5 7.24 480 11.5 0.40350G08B1-30 0.500 30 127.5 7.24 480 11.5 0.53350G08B1-38 0.500 38 159.0 7.24 480 11.5 0.91350G08B1-57 0.500 57 236.1 7.24 480 11.5 2.14350G10B1-21 0.625 21 114.1 9.02 551 13.4 0.47350G10B1-23 0.625 23 124.2 9.02 551 13.4 0.62350G10B1-24 0.625 24 129.3 9.02 551 13.4 0.68350G10B1-25 0.625 25 134.4 9.02 551 13.4 0.73

350M 350G10B1-38 0.625 38 199.6 49.33 9.02 551 13.4 1.73350G10B1-57 0.625 57 296.0 -0.05 9.02 551 13.4 4.27350G10B1-76 0.625 76 392.1 9.02 551 13.4 7.72350G12B1-19 0.750 19 125.2 10.97 628 16.0 0.73350G12B1-21 0.750 21 137.2 10.97 628 16.0 0.91350G12B1-23 0.750 23 150.2 10.97 628 16.0 1.15350G12B1-25 0.750 25 161.3 10.97 628 16.0 1.38350G12B1-38 0.750 38 239.8 10.97 628 16.0 3.04350G12B1-57 0.750 57 355.4 10.97 628 16.0 7.58350G12B1-76 0.750 76 469.9 10.97 628 16.0 13.65

500G08B1-38 0.500 38 159.0 7.24 480 11.5 0.82500G08B1-57 0.500 57 236.1 7.24 480 11.5 2.10500G08B1-76 0.500 76 312.4 7.24 480 11.5 3.70500G10B1-38 0.625 38 199.6 9.02 551 13.4 1.54500G10B1-57 0.625 57 296.0 9.02 551 13.4 4.24500G10B1-76 0.625 76 392.1 9.02 551 13.4 7.69500G12B1-25 0.750 25 161.3 10.97 628 16.0 1.13

500M 500G12B1-28 0.750 28 179.6 73.15 10.97 628 16.0 1.59500G12B1-38 0.750 38 239.8 -0.05 10.97 628 16.0 2.81500G12B1-57 0.750 57 355.4 10.97 628 16.0 7.52500G12B1-76 0.750 76 469.9 10.97 628 16.0 13.59500G16B1-19 1.000 19 166.6 16.08 829 20.3 2.31500G16B1-21 1.000 21 184.9 16.08 829 20.3 2.81500G16B1-23 1.000 23 200.7 16.08 829 20.3 3.20500G16B1-25 1.000 25 216.7 16.08 829 20.3 3.81500G16B1-38 1.000 38 320.5 16.08 829 20.3 7.42

700G10B1-39 0.625 39 205.0 9.02 580 14.7 1.54700G10B1-57 0.625 57 295.7 9.02 580 14.7 3.85700G10B1-76 0.625 76 392.1 9.02 580 14.7 7.65700G12B1-38 0.750 38 239.8 10.97 667 16.9 2.72

700M 700G12B1-57 0.750 57 355.4 104.93 10.97 667 16.9 7.47700G12B1-76 0.750 76 469.9 -0.05 10.97 667 16.9 13.55700G16B1-28 1.000 28 240.5 16.08 868 22.2 3.72700G16B1-38 1.000 38 320.5 16.08 868 22.2 7.39700G16B1-57 1.000 57 474.0 16.08 868 22.2 17.90700G20B1-21 1.250 21 230.9 18.57 966 24.6 3.76

M200 M200G16B1-30 1.000 30 254.0 120.18 16.08 28.0 4.20-0.08

M254 M254G24B1-24 1.500 24 306.8 140.2 24.10 31.8 9.30-0.08

M280 M280G24B1-30 1.500 30 379.5 170.2 24.10 31.8 14.50-0.08


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8

Torque Limiter Couplings

Torque Limiter combined with Roller Chain Flexible CouplingThe Torque Limiter Coupling combines overload protection with ability to connect in-line shafts. The unit consists of astandard Torque Limiter and platewheel connected to a special coupling sprocket by duplex Roller Chain. Available ineleven standard sizes, they are easy assembly units providing protection and reliability. For selection refer to page 6.

*Weights are for Torque Limiter and Coupling unbored.

Capacities and Dimensions

CatalogueNumber Max. Pall.

mmMax.Angle Min. Max. Limiter

mmCoupling

mmLimiter

mmCoupling

mm A B C D E F

SprocketSize

Dimensions mmMisalignment Torque Capacity Nm Minimum Plain Bore Maximum BoreWeight*

Kg

M30-2C 0.20 30’ 3 10 4.5 11 11 22 06B-16 55.0 57.1 37.0 22.5 31.0 1.5 0.5

M40-1C 4 15M40-2C 0.20 30’ 7 28 7 8 14 35 06B-22 55.0 75.2 55.0 25.0 28.0 2.0 0.8M40-3C 10 40

M45-1C 7 30M45-2C 0.20 30’ 13 55 7 8 20 40 06B-22 59.5 75.2 55.0 25.0 33.0 1.5 0.9M45-3C 17 70

200M-1C 0.25 30’ 3 13 11 14 22 42 08B-20 73.3 93.0 66.0 22.0 47.6 3.7 1.8200M-2C 6 25

250M-1C 0.25 30’ 7 34 11 11 22 50 08B-22 76.7 101.0 75.4 25.4 47.6 3.7 2.0250M-2C 12 67

350M-1C 0.31 30’ 20 100 18 18 25 70 10B-24 103.7 136.5 104.4 38.1 61.9 3.7 5.2350M-2C 34 200

500M-1C 0.38 30’ 48 283 22 22 41 95 12B-28 121.2 186.8 149.3 41.3 76.2 3.7 12.2500M-2C 88 566

700M-1C 0.51 30’ 110 770 24 24 64 135 16B-28 168.1 247.5 199.4 66.7 98.4 3.0 31.3700M-2C 224 1540

M200-24C 0.51 30’ 440 2200 35 35 80 100 16B-30 194.0 264.0 150.0 85.0 105.0 3.0 41.5800 4000

M254-32C 0.76 30’ 760 3800 48 51 90 150 24B-24 214.0 326.0 232.0 90.0 120.0 4.0 74.61350 6800

M280-32C 0.76 30’ 1100 5500 48 51 120 200 24B-30 214.0 398.0 302.0 90.0 120.0 4.0 98.22000 10000

Good Reasons to fit a Morse Torque Limiter on your Equipment.DesignProtection for expensive components within the drive system or structural framework, gives longer machine life with increasedreliability in service, and reduction of expensive downtime.

MaintenanceMaintenance is reduced by the inherent protection offered by the torque limiter, which in itself is inexpensive, corrosion resistant,and extremely easy to maintain.

Product ImprovementMany existing machines can be fitted with a torque limiter, without modification to the design, by replacing a sprocket with atorque limiter fitted with a platewheel, or for in-line drives by replacing existing coupling with a torque limiter coupling.

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9

Sheargard Overload Clutches

The Cross Sheargard clutch complements the range ofTorque Limiters by providing machinery protection onapplications where accurate torque control and shaftsynchronisation are necessary; and when in the event of anoverload, total disengagement of driving and drivenmembers is required.

The design of the Sheargard Clutches provides for thetransmission of high torques (up to 125,000 Nm) with acompact, low inertia unit. Standard stock products enablesprompt delivery, at low cost of shearpin chain sprockets andflexible shaft couplings. The provision of an optional motormonitor plate enables disconnection of the power supplyand / or operation of alarm signals in the event of anoverload when used in conjunction with a limit switch orproximity switch.

The basic advantages of the well proven “Howdon” wedgeshearpin, have been combined with a clutch designed foreconomic production, with component parts sized to enablethe use of the existing range of torque limiter platewheeland chain flexible coupling to enable supply from stock ofcomplete drive assemblies. For higher speed applications arubber coupling is available.

In the diagram Hub “A” and Flange “B” have matchingtapered slots cut axially in their periphery, into which the“Howdon” wedge-shaped shearpins “C” are inserted andfirmly clamped by two self-locking screws. Torque is transmitted by the wedge which has a reduced diameterneck in mid-span “D”’ designed to shear when thepre-determined torque is exceeded, so allowing the sleeveto rotate freely on the hub.

The Cross Sheargard by virtue of its design offers a number of advantages overalternate overload protection systems

1. Simple DesignIn a Shearpin the full shear strength is directly available as a frictionless driving force. The use of up to three shearpins provideshigh torque capacity within a compact unit, keeping both inertias and costs to a minimum. Several ratings of pin for eachclutch size provides over 200 stock torque ratings. The Sheargard can be used with chain sprockets, gears, belt drives or shaftcouplings. In the event of an overload, the wedge shaped shearpins are easy to locate, and quickly replaced by removal of twoself-locking screws and broken halves of shearpin, and replacement with a new wedge pin.

2. Accurate Torque RatingsInaccuracy of torque setting in conventional shearpin couplings is caused by non-uniform shear necks, and poor fit of the pinwith its mating surfaces. The “Howdon Wedge” pins are precision turned to a constant form and can be expected to fracturewithin ±10% of catalogue rating. The wedge pins are rigidly located in the mating grooves so totally eliminating frettingfatigue failures, and ensuring zero backlash making it ideal for indexing and reversing drives. The clamping of the pin into thewedge angle ensures positive radial and axial location. The design also ensures load sharing is achieved when a number of pinsare used for higher torque drives, enabling different rated pins to be used in one clutch.

3. ReliabilityThe “Howdon Wedge” pins are naturally “fail-safe” under all conditions. They are not affected by changes in temperature orhumidity and are tolerant of most environment conditions. Sizes 350-900SG standard pins are manufactured from brass toavoid sparking in the event of overload, thus making them suitable in volatile atmospheres. The unconventional shape of thewedge pins prevents the fitment of alien pins ensuring safety and product liability requirements are met at all times. Theperipheral location of the wedge pins enables easy inspection, and clear colour coding of the pins ensures simple checking oftorque setting.

4. AvailabilityCross Sheargard Clutches and Couplings are carried in stock with minimum pilot bore. Units can be finished bored and keyedto customer’s specifications through a 48 hour rework service. A large stock of standard rated wedge pins, colour codedaccording to capacity ensures instant spares availability.

5. Low Cost ProtectionThe cost of Sheargard Clutches is kept low by volume production techniques, so providing the customer with a low costsynchronised, reliable overload protection device.


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10

Sheargard Overload Clutches

Standard Stock Sheargard Clutches are available in five sizes providing a torque range from 27 to13,700 Nm. Other units with torque ratings to 125,000 Nm are available to order, on short lead time.For further details contact Cross & Morse Sales Office.

*(1)For standard Torque Ratings see table page 12. *(2)The drive sprocket/pulley can overhang spigot.*(3)Dimensions E & F can be adjusted to suit sprocket widths. *(4)W37, W50, & W75 Brass Std, others steel.

Minimum Number of Teeth on Sprockets for Standard Roller Chains

Dimensions

ClutchSize

Bore Dia dWedge(4)*

Pins

Driveradius

R

Torque Rating(1)*

MinNm lb ft

MaxNm lb ft Min Max

250SG 2 x W25 26 27 20 336 248 10 25350SG 3 x W37 34.5 33 24 1509 1113 19 28500SG 3 x W37 47 45 33 2028 1496 24 45700SG 3 x W50 66.5 251 185 5580 4115 28 65800SG 3 x W50 81 306 225 6798 5013 30 80950SG 3 x W75 97 830 612 16740 12345 45 1001000SG 4 x W100 128 3468 2558 63920 47138 55 1151200SG 4 x W100 147 3982 2937 73400 54140 60 1501400SG 4 x W120 160 12240 9025 100000 73750 70 1801600SG 4 x W120 200 15300 11285 125000 92200 100 215

ClutchSize

Clutch Size

Chain Pitch1/2”1/2” 5/8” 3/4” 1” 1 1/4” 1 1/2” 2”

Outside Dia.A

LengthThrough

BoreL

OverallLength

B1

OverallLength

B2

Spigot Dia.C

BoltPCD

D

BoltsP

SpigotLength

E(2)*

PositionBackFace

F

250SG 63 38.90 / 38.85 50 6 x M5 11.5 15.5350SG 85 49.25 / 49.20 65 6 x M6 16 21500SG 105 73.08 / 73.03 92 6 x M8 25 31700SG 148 104.85 / 104.80 128 6 x M10 35 40800SG 175 119.86 / 119.80 146 6 x M12 40 50950SG 215 149.85 / 149.80 185 6 x M14 54 64

1000SG 280 164.85 / 164.80 220 8 x M16 75*(3) 91*(3)

1200SG 320 224.85 / 224.80 260 8 x M20 100*(3) 120*(3)

1400SG 350 254.85 / 254.80 300 8 x M24 125*(3) 150*(3)

1600SG 425 304.85 / 304.80 360 12 x M24 148*(3) 173*(3)

36577292

112130191220295325

7893

113133156217246321351

- 36577292

112130175200270300

250SG 27 22 18350SG 25 27 24 18500SG 30 24 21 16 18700SG 40 33 28 22 18 19800SG 38 34 25 21 23 20950SG 40 31 25 26 231000SG 35 29 28 261200SG 36 30 291400SG 40 34 251600SG 38 29

8mm900SG

-1600SG( ) On sizes 1000SG to 1600SG the

outer hub is retained by an end plate whichextends beyond bore length.

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350SGES 0.6 0.7° 33 300 19 28 45 114 115 72 48 57 9 85500SGES 0.7 0.7° 45 1200 24 45 60 143 158 96 61 72 10 105700SGES 0.9 0.8° 251 3000 28 65 75 183 202 120 75 92 16 148800SGES 1.0 0.8° 306 4800 30 80 80 208 202 130 82 100 26 175950SGES 1.4 0.8° 830 12000 45 100 100 249 294 160 97 130 22 215

11

Sheargard Flexible Couplings

Sheargard Chain CouplingsThe standard Cross Sheargard unit combines with the Chain Coupling to provide stock overload couplings withminimum backlash and a high reliability. This construction provides a simple, reliable, easy to assemble flexible coupling capable of transmitting high loads and accommodating shaft misalignment with continuous overloadprotection. Motor monitor assemblies can also be used to switch off power in the event of an overload.

Sheargard ES & KE CouplingsFor high speed drives (over 500 rpm) low inertia rubber elastic couplings are offered to enable quiet operation withtorsional elasticity to damp vibration and absorb shock loads. The ES Couplings consists of two close grained castiron jaws with hard rubber drive elements interposed between them, retained by a reinforced thermoplastic cap. TheKE Coupling also has close grained cast iron jaws with a Pebax Polyester elastomeric gear ring interspaced to dampvibration and torsional loads. This series can be provided with taper-bore bushes on the coupling end. The KECoupling provides a lower cost solution.

Except as indicated all dimensions in mm*(1)Running Torque should not exceed 50% of this figure. *(3)Coupling half can be supplied for taper-bush fitted either from hub*(2)Coupling half manufactured with blind bore. end (type H) or from coupling end (type F).

*(4)Taper bore versions are shorter.

Chain Coupling

Chain Coupling Dimensions

KE & ES Couplings

CouplingRef.

Misalignment Torque Ratings Sheargard Bore Coupling Bore

Parallel Angular Min Nm Max Nm Min Max Min Max A B C D E F

350SG-C 0.31 1/2° 33 1509 19 28 18 57 106 137 104 38 57 11500SG-C 0.38 1/2° 45 2028 24 45 22 70 119 187 149 41 72 5700SG-C 0.51 1/2° 251 5580 28 65 24 102 162 248 199 67 92 3800SG-C 0.75 1/2° 306 6796 30 80 51 120 186 278 175 77 100 9950SG-C 0.75 1/2° 830 16740 45 100 51 150 222 326 232 83 130 9

1000SG-C 1.00 1/2° 3468 37500 45 115 60 200 286 462 320 106 175 5

KE Sheargard Coupling Dimensions

CouplingRef.

Misalignment Torque Ratings Sheargard Bore CouplingBore

Max *(2)

TaperBush

Size *(3)Parallel Angular Min Nm Max Nm*(1) Min Max

*(4) *(4)

A B C D E F

350SGKE13 0.4 1.0° 33 725 19 28 55 1610 140 130 90 50 57 33

350SGKE15 0.4 1.0° 33 1490 19 28 65 2012 151 150 104 58 57 36

500SGKE15 0.4 1.0° 45 1490 24 45 65 2012 179 150 104 58 72 49

500SGKE18 0.4 1.0° 45 2026 24 45 75 2517 185 180 120 68 72 45

700SGKE23 0.5 1.0° 251 4800 28 65 95 3020 241 225 150 85 92 64

800SGKE28 0.5 1.0° 306 6796 30 80 130 3525 281 275 206 106 100 75

ES Sheargard Coupling Dimensions

CouplingRef.

Misalignment Torque Ratings Sheargard Bore CouplingBore

Max *(2)Parallel Angular Min Nm Max Nm*(1) Min Max EA F HB C D


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12

Sheargard Torque Ratings

Selection of Wedges for Torque RatingFor each size of Sheargard clutch a selection of Standard wedge pins are available, which can be combined togetherto provide the desired torque setting. Standard Howdon wedges are coloured coded for identification. Sizes 350SG to900SG use brass pins as standard (steel optional), other clutches use steel as standard pin material.

Note:- Torque capacity of size 250SG controlled by unit size, and not wedge capacity. Sizes 1000SG and above are designed to accept up to fourwedges, size 250SG only has two wedge slots.

Torque Ratings - Nm

A representative selection of standard torque settingspossible with standard wedges is shown in the tablebelow, all torque ratings being accurate within ±10%.Additional torque settings can be provided withstandard or special wedge pins. To avoid unnecessarytripping of the clutch the design torque should be atleast 15% above max. starting torque of the drive. Tominimise downtime and costs, use selections with

minimum number of wedges, for simplicity ofmaintenance and stock control use selections withwedges one colour, as shown in the table. If torquesetting is critical, intermediate ratings can be obtained bymixing colours. For drives with shaft speed above 120rpm, or for improved protection of drive and machinery,use optional monitor plate with a limit switch orproximity sensor to switch off motor on overload.

Wedge Replacement following Overload:To return Sheargard to service after overload, first remove allbroken halves of wedges by removing their locking screws.Rotate hub on body until wedge grooves are in line (for driveswhere synchronisation is essential rotate until alignment markson body and hub flanges are in line). Ensure wedge grooves areclean. Fit new wedges of same colour identification as partsremoved and fix firmly into place by tightening locating screws.

Servicing Sheargard ClutchesSheargard units require minimal servicing. Routine checks thatwedge locating screws and monitor plate screws are securelylocked down is generally all that is required. If the clutch hassuffered a number of overloads, or at major maintenanceshutdowns disassembly of the clutch, cleaning with paraffin andlight greasing of bearing surfaces will ensure long service life.

Number of Wedges in Clutch Torque Rating against each Clutch size and Pin Material (Standards in Bold)Orange Orange/ Gold White White/ Yellow Yellow/ Blue Blue/ Green Green/ Red Black 250 350 350 500 500 700 700 800 800 950 950 1000 1200 1400 1600

White Yellow Blue Green Red Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Steel Steel Steel Steel

1 0033 0046 0045 0062 0115 0160 0140 02001 0046 0063 0062 0085

1 0062 0086 0084 01152 0066 0092 0090 0124

1 027 0086 0119 0116 0169 0251 0345 0306 0420 00830 01140 03468 039832 0092 0126 0124 0170

3 0099 0138 0135 01862 0124 0172 0168 0230

1 0125 0171 0187 0230 0341 0469 0415 0571 01165 01600 05160 059263 0138 0189 0186 0255

1 082 0165 0226 0221 0303 0446 0645 0543 0786 01476 02027 06942 07972 12240 153002 054 0172 0238 0232 0338 0502 0690 0612 0840 01660 02280 06936 07966

3 0186 0258 0252 03451 0199 0273 0267 0367 0652 0896 0794 1091 02012 02763 08718 10012

2 0250 0342 0374 0460 0682 0938 0830 1142 02330 03200 10320 118521 107 0257 0353 0345 0474 0896 1230 1091 1498 02409 03309 09824 11282 17632 22040

3 081 0258 0357 0348 0507 0753 1035 0918 1260 02490 03420 10404 119491 0300 0411 0402 0562 1119 1536 1363 1871 02846 03908 11607 13330

2 164 0330 0452 0442 0606 0892 1290 1086 1572 02952 04054 13884 15944 24480 306001 136 0370 0508 0497 0682 1388 1876 1691 2285 03570 04904 13875 15935 20240 25300

3 0375 0513 0561 0690 1023 1407 1245 1713 03495 04800 15480 177782 0398 0546 0534 0734 1304 1792 1588 2182 04024 05526 17436 20024

1 0447 0815 0600 0825 1727 2371 2104 2888 04190 057233 246 0495 0678 0663 0909 1338 1935 1629 2358 04428 06081 20826 23916 36720 45900

1 168 0503 0891 0676 0928 1785 2452 2174 2987 04810 06606 15980 18352 24992 312402 214 0514 0706 0690 0948 1792 2460 2182 2996 04818 06618 19648 22564 35264 44080

1 1860 2555 2266 3112 05580 07683 16922 19434 31344 391803 0597 0819 0801 1101 1956 2688 2382 3273 06036 08289 26154 30036

2 0600 0822 0804 1124 2238 3072 2726 3742 05692 07816 23214 266602 272 0740 1016 0994 1364 2776 3752 3382 4570 07140 09808 27750 31870 40480 50600

27768 31888 48960 612003 321 0771 1059 1035 1422 2688 3690 3273 4494 07227 09927 29472 33846 52896 66120

2 0994 1630 1200 1650 3454 4742 4208 5776 08380 114463 0900 1233 1206 1686 3357 4608 4089 5613 08538 11724 34821 39990

2 336 1006 1782 1352 1856 3570 4904 4348 5974 09620 13212 31960 36704 49984 624802 3720 5110 4532 6224 11160 15366 33844 38868 62688 78360

4 34872 400484 39296 45128 70528 88160

3 408 1110 1524 1491 2046 4164 5628 5073 6855 10710 14712 41625 47805 60720 759003 1341 2445 1800 2475 5181 7113 6312 8664 12570 17169

4 46428 533203 504 1509 2673 2028 2784 5355 7356 6522 8961 14430 19818 47940 55056 74976 93720

3 5580 7665 6798 9336 16740 23049 50766 58302 94032 1175404 55500 63740 80960 101200

4 63920 73408 99968 124960

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The Crossgard series of overload protection clutches all use sprung loaded balls locked in detents to provide drive and overload control. The balls are random positioned in the clutch so drive can only beengaged in one relative angular position between driver and driven shafts, so ensuring fullsynchronisation of the drive at all times. In the event of an overload the balls are driven out of theirdetents to release the torque, and cause axial movement of the pressure plate which can be used toactuate a limit switch or proximity sensor to isolate the drive. All units are fitted with a torque indicatorto enable simple setting of the desired torque rating. There are three basic types of Crossgard Clutchesall of which are available as flexible shaft couplings, types CG, CGX and CGZ.

Crossgard Principles of OperationDuring normal operation torque is transmitted between hub and driving flange by a number of balls located in the flangeengaged in detents in the hub under load applied by disc springs. The balls are arranged in irregular angular positions to ensurere-engagement can only occur at one angular position between hub and flange. When an overload occurs the balls are driven outof their detents and then roll between the hub and pressure plate. The pressure plate moves axially a sensor plate which can beused to activate a proximity or limit switch. Torque is varied by adjusting the spring load on the pressure plate by tightening orloosening adjusting nuts.

Type CG Crossgard Clutch Pages 15-17

CG Crossgard Clutches are a low cost, simple designsuitable for general purpose applications. The clutchesprovide full overload protection of drives which requiresynchronisation to be maintained at all times. Followingoverload the clutches are automatically reset by slowrotation of input drive once the overload cause is cleared.Seven sizes of clutch provide a torque range 10Nm to 7150Nm with operating speeds to 700rpm. Torque settingsare accurate to ±10% even after repeated tripping.Also can be supplied with roller chain or elastomericcoupling.

Use CG Clutch:• For general purpose applications.• Where drives are inaccessible.• For chain and low speed belt drives.• In wrapping and packaging machines.• On bakery and bottling machines.• For conveyors and on sliding door drives.

13

Crossgard Overload Couplings

Design FeaturesCrossgard clutches have been designed to provide the customer with a reliable, simple to operate clutch, all three typesincorporating the following design features.

Drive SynchronisationNon symmetrical arrangement of the drive balls and pockets allows only one angular position of engagement of drive,ensuring input and output are always synchronised.

Bi-directional driveThe clutches function equally in either direction of rotation, and are suitable for reversing drives.

Visual Torque MeterAll units have a scale on the adjusting nut to enable the set torque to be determined by reference to torque charts. Settingcan also be verified at any time by visual check.

Simple Torque setting and adjustmentRequired torque is set by turning the adjusting nut, and setting off torque scale.

Overload MonitoringAll units incorporate a sensor plate which moves axially when overload occurs to trigger a proximity or limit switch toisolate power to motor and activate failure indicators.

Stock availabilityAll standard Crossgard clutches are carried in stock with pilot bore. Units can be supplied with finished bore, keyseat andsetscrews, fitted with platewheels; or complete with flexible coupling on 72 hours lead time.

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Crossgard SelectionLike other overload devices,it is best to position the Crossgard nearest the driven equipment where the overload ismost likely to occur. Tripping torque should be at least 25% greater than the operating torque to compensate for motorstarting torque and intermittent, shock and reversing loads.

Selection Method1. Selecting the trip torque.

Trip torque should be set equal to the maximumamount of torque which can be applied based onsuch conditions as the strength of the machine andload. When it is not clear what the maximumamount of torque is, calculate the rated torque fromthe rated output and the rpm of the shaft ontowhich the Crossgard is to installed, and multiplythis figure by the service factor. The result may betaken as the trip torque.

Tripping Torque= Operating x SF

Torque Nm= Power kW x 9550RPM

14

Type CGX Crossgard Clutch Pages 18/19

High technology and precision is demanded in indexing and the position of equipment in modern machinery. The CCX Crossgard satisfies the demands for precision and performance and provides overload protection for modern machinery. CGX Clutches through their unique design provide backlash free, fail-safe, overload protection. Highprecision of trip torque is obtained with settings within ±3% accuracy,and very little motion is lost during tripping. An innovative ball andwedge mechanism is used to prevent backlash, and this is furtheremployed in the coupling version to compensate for angular or parallelerror or axial displacement with no loss in torsional rigidity. Five sizes ofclutches and couplings have range 1.7 Nm to 785 Nm withmaximum shaft speeds of 1400rpm. Units automatically reset afteroverload by slow shaft rotation.

Use CGX Clutch: • For precision positioning indexing drives.• For accurate mechanical overload protection.• For zero backlash drives.• On output shafts on cam boxes and Geneva mechanisms.• On servo motor drives and robotics.• In printing machinery.• On N.C. machine tools and machining centres.

Type CGZ Crossgard Clutch Pages 20/21The CGX Clutches incorporate a locking mechanism which restrainsspring pressure being applied to the driving balls following anoverload. Following an overload the input drive can continue torotate freely enabling the clutch to be used for shaft speeds up to1800 rpm. After the machine has been stopped following an overloadthe CGZ can only be reset by applying an axial load on the pressureplate. The clutch can also be used as an on-off clutch. Four sizes havetorque range 2.4 Nm to 450 Nm, with accuracy ±10%. An elastomericcoupling is also available.

Use CGZ Clutch:• For high speed drives - direct motor shaft.• Where manual re-engagement preferred.• As ON-OFF clutch.• For machine tool drives.• On textile and paper making machinery.

2. Select Clutch or Coupling where torque is mid rangeof rating to allow maximum on-site adjustment.

3. Check shaft diameters can be accommodated, if not alarger unit will be required.

4. Ensure shaft speeds are within limits of unit selected.

5. For coupling check alignment requirements.

6. Select proximity sensor switch, see page 29.

Crossgard Overload Clutchesand Selection Procedure

Determination of Service FactorSF Operating Conditions

1.25

1.50

1.70

Normal starting and stopping, intermittent motion

Load with light shocks, forward and reverse motion

Load with heavy shocks,frequent torque reversals

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15

Type CG Crossgard Clutch

Provides low cost overload protection with simple setting and operation, whilstmaintaining synchronisation of driving elements

ModelCHAIN PITCH (INCHES)

1⁄4 8mm 3⁄8 1⁄2 5⁄8 3⁄4 1 1 1⁄2 2

CG20 48 40 34 26 22CG30 60 48 41 32 26 22CG50 57 43 35 30 24CG70 58 47 40 31CG90 47 36 25

CG110 44 30 26CG130 33 29

Driving members can be Timing Belt Pulleys, Vee-Belt Pulleys, Spur Gears or mostcommon, Roller Chain Sprockets. For roller chain the minimum number of teethsprocket which can be used is shown in the table below:

Model A B C D Eh7 F G H I J K M N (No.) R S T

CG200 47 7.5 5.7 25 090 078 062 082 054 048 030 0M5 4 05.5 065 1.8CG300 60 9.5 7 33 113 100 082 106 075 065 0042.5 0M6 6 06.5 085 2.0CG500 81 14.5 8.5 44.8 160 142 122 150 117 098 070 0M8 6 09.0 125 2.7CG700 110 14.5 12 68.5 220 200 170 205 166 157 106 M10 6 11.0 175 3.3CG900 157 25.0 22 88.6 295 265 236 290 213 203 124 M12 8 13.0 242 5.4CG110 195 30.0 25 105 355 325 287 345 278 266 155 M16 6 17.0 295 6.0CG130 230 35.0 27 130 400 360 319 390 316 304 184 M16 8 17.0 330 6.6

Dimensions in mm

1 Hub 5 Disc Spring 9 Lock Plug 13 Bearing2 Centre Flange 6 Steel Ball 10 Skid Bearing 14 Pressure Plate3 Plate 7 Snap Ring 11 Sensor Plate 15 Adjusting Bolt4 Adjusting Nut 8 Set Screw 12 Indicator 16 Adjusting Nut

Model Torque Nm Max. Speed Disc Spring Bore Size Weight Inertia

Min Max RPM Colour Min Max kg. kgfm2 x 10-2

CG20 10 44 700 Orange 8 20 0.9 0.23

CG30L 20 54 500 Yellow 12 30 2.0 0.79CG30H 54 167 Orange

CG50L 69 147 YellowCG50M 137 412 300 Blue 22 50 5.9 4.84CG50H 196 539 Orange

CG70 294 1080 160 Orange 32 70 17.0 25.2

CG90L 441 1323 120 Yellow 42 90 37.5 135CG90H 931 3136 Orange



90.06/ 90.02113.08/113.02160.10/160.02220.10/220.02295.10/295.02355.12/355.02400.12/400.02

Dimensions for Mounting Drive Sprockets

Model Amm

Bmm

Cmm

Dmm N

CG20CG30CG50CG70CG90CG110CG130

6585

125175241292324

78100142200265325360

5.56.59.0

11.013.017.017.0

4666868

Torque Meter

CG20-CG50

T Sensor Plate Travel


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ModelTorque NM Max. Misalignment Clutch Bore Size Coupling Bore Size Dimensions Weight Inertia

Speed kgfm2

Min Max RPM Parallel Angular Min Max Min Max A B C D E F kg. x10-2

CG20-CC 10 44 700 0.25 1⁄2˚ 8 20 16 53 81 118 70 30 47 3.5 2.6 1.43

CG30L-CC 20 54 500 0.31 1⁄2˚ 12 30 20 60 99 147 85 35 60 4 4.8 3.7CG30H-CC 54 167

CG50L-CC 69 147CG50M-CC 137 412 300 0.38 1⁄2˚ 22 50 20 63 123.5 199 95 40 81 2.5 12.3 16.9CG50H-CC 196 539

CG70-CC 294 1080 160 0.51 1⁄2˚ 32 70 25 80 174.5 265 120 50 110 14.5 29.2 81.7

CG90L-CC 441 1323 120 0.76 1⁄2˚ 42 90 30 107 257 374 160 80 157 20 79.5 491CG90H-CC 931 3136

CG110L-CC 686 1960 100 0.76 1⁄2˚ 52 110 40 107 310 446 160 100 195 15 125.5 1063CG110H-CC 1568 5096

CG130L-CC 1176 3038 80 1.00 1⁄2˚ 60 130 60 150 368 495 225 120 230 18 188.5 2002CG130H-CC 2646 7154

16

Type CG CrossgardFlexible CouplingsTwo basic types of couplings are being offered, Type ES Rubber Elastic Coupling, and Type CC RollerChain Coupling. Both combine the full overload protection capabilities of the CG Crossgard withfacility of shaft to shaft connection.

Dimensions in mm.

Crossgard CG-CC CouplingsA standard roller chain sprocket is connected by a duplex roller chain to a platewheel mounted on the CG Clutch.This construction provides a simple, reliable, low cost means of transmitting drive with minimum backlash, andaccommodating reasonable shaft misalignment. Both Taper-bored and pilot bore sprockets are available.

CG-CC Crossgard Chain Coupling

Dimensions in mm.For further dimensions of Crossgard Clutch refer to page 15.

CG-CC Crossgard Taper Bored Chain Coupling

Bore

ModelTorque NM Max. Misalignment Clutch Bore Size Coupling Bore Size Dimensions Weight Inertia

Speed kgfm2

Min Max RPM Parallel Angular Min Max Min Max A B C D E F kg. x10-2

CG20-CC 010 0044 700 0.25 1⁄2˚ 08 20 16 53 076 118 076 25 047 0 3.5 2.4 1.43

CG30L-CCTB 020 0054 500 0.31 1⁄2˚ 12 30 20 60 095 147 090 31 060 4 4.2 3.7CG30H-CCTB 054 0167

CG50L-CCTB 069 0147CG50M-CCTB 137 0412 300 0.38 1⁄2˚ 22 50 20 63 128 199 108 44 081 02.5 11.5 16.9CG50H-CCTB 196 0539

CG70-CCTB 294 1080 160 0.51 1⁄2˚ 32 70 25 80 175 265 159 51 110 14.5 29.5 85.5

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17

Crossgard Overload Couplings

Crossgard CG-ES CouplingsThe ES Couplings consist of two close grained cast iron jaws with hard rubber drive elements interposed. It is a lowinertia coupling combining quiet operation with torsional elasticity to absorb shock loads and damp vibration.

Crossgard Couplings can be supplied with both clutch and coupling hub finish bored, keyseated, with setscrew to customers’requirements on 48-hour re-work service.

Installation of Crossgard CG ClutchesFor optimum performance of CG Clutches and couplings it is necessary to have a good fit(transition) between shafts and hubs.Drives should be via a parallel key with interference fit with ideally two set screws to maintain axial position on shaft.

The chain/belt drive should be accurately aligned to avoid axial loading of the clutch; and coupling assemblies should be carefullyaligned at installation to minimise operating loads.

All units should be installed with a limit switch or proximity switch to shut down the drive in the event of an overload, refer topage 29 for details standard units available.

Installation of Crossgard CouplingsPrior to installation it is necessary to separate the Crossgard and Coupling half by either removing the duplex chain, or for the ESCoupling removing the outer cover and the rubber element. Fit Crossgard and Coupling half to shafts, for ES Coupling ensurecover is fitted to hub prior to installation. Adjust distance between Crossgard and Coupling according to catalogue dimensions,and align shafts as accurately as possible. Refit duplex chain or rubber element and cover, ensure chain is free to move, and shaftsrotate freely.

For further dimensions of Crossgard Clutch refer to page 15.Dimensions in mm.

Model Setting TorqueNm

MaxSpeedRPM

Misalignment

Parallel Angular PilotBore

MaxBore

PilotBore

MaxBore

A B C D E F Weightkg

Inertiakg m2

x10-2

Clutch Coupling

CG-ES Crossgard Coupling

CG20-ES

CG30L-ESCG30H-ES

CG50L-ESCG50M-ESCG50H-ES

CG70-ES

9.6 - 45

19.8 - 5453.6 - 167

68 - 147136 - 407196 - 540

294 -1080

700

500

300

160

0.5

0.7

0.9

1.2

0.7˚

0.7˚

0.6˚

0.5˚

8

12

22

32

20

30

50

70

-

-

-

-

40

55

75

90

118

146

199

261

92

143

202

257

65

88

120

145

45

57

75

89

47

60

81

110

26

29

43

62

2.7

6.3

16.6

37.6

0.38

1.49

9.2

30.3


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18

Type CGX Crossgard Clutch

These clutches can be supplied with pilot bore, finish bore and keyseat, or fitted with clamping elements to clampdirectly to keyless shafts. The use of clamping elements ensures total elimination of backlash in the completeassembly within the operating torque range, but does require an increase to the overall length of clutch in order toaccommodate. Clutch and clamping element assemblies are supplied from stock to suit specific metric shaft sizes asindicated in the table, using clamping elements types ACE81 & RCK80.

For Selection of Crossgard CGX Clutches refer to page 14, always use with proximity sensor switch, refer to page 29

Provides complete overload protection of drives with accurate positioning and zero backlash.Suitable for gears, cams and index table drives.

1 Hub2 Driven Flange3 Plate4 Adjusting Nut5 Fixed Nut

6 Bearing7 Bearing8 Bearing9 Side Plate

10 Steel Ball

11 Coil Spring12 Set Screw13 Lock Plug

2-ø R Depth S

Min Torque PositionTravel when tripping

RotatedRevolutionScale

DegreeScale

TorqueScale

Dimensions in mm. *Weight and inertia values for clutches with max. bore.† Clamping elements protrude from end of clutch 17.5mm (CG X 10 & 20), 25.0mm (CGX 35 & 50), 31mm(CGX 70)

Model

Models A B C D F Gh7

HPCD I J

PCD M N O R SP Screws

No. Size

P Screws

No. Size

Setting TorqueRange

Nm

CGX10 L

CGX10 M

CGX10 H

CGX20 L

CGX20 M

CGX20 H

CGX35 L

CGX35 M

CGX35 H

CGX50 L

CGX50 M

CGX50 H

CGX70 L

CGX70 M

CGX70 H

CGX10

CGX20

CGX35

CGX50

CGX70

53

64

68

92

98

22

35

37.5

54.8

61

1.4

1.6

2.0

2.6

3.5

7.5

10

11

15

15

+0.3

+0.7

-0.5

+0.3

+1.0

62

86

107

148

185

54

74

88

130

164

42

60

70

105

135

34

50

60

-

-

56

70

88

123

148

56

73

91

129

153

61.8

86

107

148

185

4

6

6

6

6

M4x6

M5x8

M6x7

M8x13

M10x13

5

5

6

9

10

10

10

10

17

18

4

6

6

-

-

M4x7

M4x7

M5x8

-

-

5.5 - 15

11 - 30

6.5 - 24

13 - 35

26 - 68

23 - 68

44 - 100

89 - 200

46 - 120

92 - 200

180 - 400

130 - 370

270 - 520

400 - 785

1.7 - 6.5

MaxRunningSpeedRPM

Colour ofSpring xNumber

PilotBoremm

MaxBoremm

*Weightkg

Inertiakgfm2 (x10-2)

Shaft Clamping Element †Std. Bore Sizes (mm)

Yellow x 3

Red x 3

Red x 6

Yellow x 6

Red x 3

Red x 6

Red x 5

Green x 5

Green x 10

Red x 5

Green x 5

Green x 10

Red x 8

Green x 8

Green x 12

1400

1100

800

600

480

7

8.5

12

18

23

15

25

35

55

70

0.75

1.67

2.51

7.03

11.4

8, 9, 10, 11, 12

11, 12,14, 15, 16, 18, 19, 20

19, 20, 22, 24, 25, 28, 30

24, 25, 28, 30, 32, 35, 38, 40, 42

28, 30, 32, 35, 38, 40, 42, 45

48, 50, 55, 60

0.177

0.535

1.33

7.32

19.5

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19

Type CGX-CCrossgard Couplings

These couplings can be supplied with pilot bore, finish bore and keyseat and setscrews, or fitted with clamping elements to clamp directly to keyless shafts. The use of clamping elements eliminates all backlash in the drive linewithin the operating torque range, but does require an increase to the overall length of coupling in order to accommodate. Coupling and clamping element assembly are supplied to suit specific metric shaft sizes as indicated inthe table. Clutch and Coupling half can have different bush sizes.

Provides complete overload protection of drives with accurate positioning and zero backlash.For shaft to shaft connection.

1 Hub2 Centre Flange3 Plate4 Adjusting Nut5 Flange

6 Boss7 Bearing8 Side Plate9 Steel Ball

10 Coil Spring

11 Set Screw12 Lock Plug14 Hex-head Bolt15 Spring Washer

Dimensions in mm.

Models A B C

DMin.

PointedPosition

EPCD

FPCD G H I J M N O R S

PScrews xLength

QScrew xLength

CGX10-C

CGX20-C

CGX35-C

CGX50-C

CGX70-C

69

84

88

114

124

24

24

24

34

36

1.3

1.6

1.9

2.4

3.3

+0.3

+0.3

- 0.5

+0.9

+0.6

62

89

113

158

200

42

66

83

112

145

33

55

70

92

116

25

35

35

45

50

2

3

3

4

4

42

46

50

65

70

56

70

88

123

148

_

_

_

128

152

74

98

125

174

218

M4x18

M5x20

M6x25

M8x32

M10x22

M4x10

M5x12

M6x15

M8x20

M10x38

5

5

6

9

10

10

10

10

17

18

2-ø R Depth S

Min Torque PositionTravel when tripping

RotatedRevolution

Scale

DegreeScale

MaxBoremm

For Selection of Crossgard CGX-C Clutches refer to page 14, always use with proximity sensor switch, refer to page 29

*Weight and inertia values for couplings with max. bore.† Clamping elements protrude from end of clutch/coupling 17.5mm to 34.0mm dependant on size.

ModelSetting Torque

RangeNm

CGX10 LC

CGX10 MC

CGX10 HC

CGX20 LC

CGX20 MC

CGX20 HC

CGX35 LC

CGX35 MC

CGX35 HC

CGX50 LC

CGX50MC

CGX50HC

CGX70 LC

CGX70 MC

CGX70 HC

4.6 - 12.7

9.3 - 25.5

5.2 - 18.6

9.8 - 27.5

20.6 - 55

19 - 57

36 - 84

74 - 166

40 - 98

80 - 176

160 - 343

120 - 325

235 - 460

353 - 696

1.5 - 5.4

MaxRunningSpeedRPM


PilotBoremm

MaxBoremm

PilotBoremm

Clutch Half Coupling Half*Weight

kgInertiakg m2

(x10-2

MaximumAngular

ErrorDeg.

MaximumParallel

ErrorDeg.

MaximumAxial

Movementmm

Shaft Clamping Element †Std. Bore Sizes (mm)

() Sizes fit Cplg half only

Yellow x 3

Red x 3

Red x 6

Yellow x 6

Red x 3

Red x 6

Red x 5

Green x 5

Green x 10

Red x 5

Green x 5

Green x 10

Red x 8

Green x 8

Green x 12

700

550

400

350

240

7

8.5

12

18

23

7

8.5

12

18

23

19

35

50

60

80

15

25

35

55

70

1.07

2.38

3.92

10.9

16.3

8, 9, 10, 11, 12

11, 12, 14, 15, 16,

18, 19, 20

(22, 24, 25, 28, 30)

15, 16, 18, 19, 20, 22,

24, 25, 28, 30

(32, 35, 38, 40, 42)

24, 25, 28, 30, 32,

35, 38, 40, 42

(45, 48, 50)

28, 30, 32, 35, 38,

40, 42, 45, 48, 50, 55, 60

(65)

0.222

0.924

2.65

13.34

35.7

0.6

0.6

0.6

0.6

0.6

0.1

0.1

0.1

0.1

0.1

±0.5

±0.5

±0.5

±0.5

±0.5º

Torque Scale


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20

Type CGZ Crossgard Clutch

Type CGZ clutches totally disengage on overload, and will not re-engage drive without external axial force being applied to thepressure plate when the clutch is correctly aligned. The clutch must be stationary when re-engaged, otherwise the clutch may bedamaged.The CGZ clutch can be used as a mechanical engage/disengage clutch, but whilst the clutch can be dis-engaged at full speed byapplying an axial force to the pressure plate, it can only be engaged whilst stationary. These clutches are designed for use onhorizontal shafts, but may be applied to vertical shaft applications providing the driven flange plate is uppermost.

For Selection of Crossgard CGZ Clutches refer to page 14.

Provides total disengagement in event of overload.Suitable for mounting gears, cams sprockets and timing belt pulleys

1 Hub2 Centre Flange3 Driven Flange Plate4 Plate

5 Ball Cage6 Adjustable Nut7 Bearing (Z Type)8 Steel Ball

9 Coil Spring10 Snap Ring11 Snap Ring12 Set Screw

13 Lock Plug14 Hex-Head Bolt15 Spring Washer16 Set Screw

Min Torque Position

Travel when tripping

2-ØV, Depth W

X

RotatedRevolutionScale

DegreeScale

TorqueScale

Dimensions in mm. *Weight and inertia values for clutches with max. bore.

Model

Model A B C ED F G H J KPCD

Lh7 N Q R S SIZEWVSize x

length

T Screw

No.

ITravelwhen

tripping

Setting TorqueRange

Nm

CGZ20 L

CGZ20 M

CGZ20 H

CGZ30 L

CGZ30 M

CGZ30 H

CGZ40 L

CGZ40 M

CGZ40 H

CGZ50 L

CGZ50 M

CGZ50 H

CGZ20

CGZ30

CGZ40

CGZ50

74

83.5

101

114.5

73

82

100

112

8

8

9

10

6

6

8

9

13.5

14.5

20

20.2

0.8

1.1

1.1

1.2

11

11.5

14

16

4.1

4.7

5.9

7

96

118

152

178

86

106

139

162

72

87

114

133

24.5

27.5

32.5

37

58

76

104

114

70

88

119

138

88

108

141

166

4

4

6

6

M5x10

M6x12

M6x12

M8x16

5

6

8

9

10

10

14

14

M5x10

M6x10

M8x10

M8x10

1

1.5

1

2.5

6 - 20

20 - 52

39 - 108

26 - 93

44 - 127

88 - 245

63 - 157

128 - 304

245 - 450

MaxRunningSpeedRPM


PilotBoremm

*Weightkg


Yellow x 3

Blue x 3

Blue x 6

Yellow x 4

Red x 4

Red x 8

Blue x 5

Red x 5

Red x 10

Red x 5

Red x 10

Green x 10

1800

1800

1800

1800

8

12

17

22

20

30

40

50

2.57

4.17

8.71

13.7

1.09

2.78

9.60

21.2

MaxBoremm

2.4 - 8.3

4.1 - 15.7

8.2 - 31.4

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21

Type CGZ CrossgardFlexible CouplingsFor shaft to shaft connection the CGZ Couplings provides total disengagement in the event of overload. Suitable formounting on high speed shafts. The coupling consists of two close grain cast iron jaws with hard rubber driveelements interposed. A low inertia coupling which combines quiet operation with torsional elasticity to absorb shockloads and damp vibrations.

1 Coupling Hub2 Cover

3 Rubber Element4 Connecting Flange

For Selection of Crossgard CGZ Clutch Couplings refer to page 14.

*Weight and inertia values for couplings with max. bore.

Dimensions in mm

For detail dimensions of CGZ Clutch refer to page 20.*Couplings halves are stocked unbored and centred.

Stock Couplings can be reworked to customers’ bore and keyway requirements on short delivery lead time.

ModelSetting Torque

RangeNm

MaxRunningSpeed x

RPM

Colours ofSpring xNumber

CouplingModel Parallel mm Angular Axial mm

Weightkg


Max Allowable Misalignment

CGZ20 L-ES

CGZ20 M-ES

CGZ20 H-ES

CGZ30 L-ES

CGZ30 M-ES

CGZ30 H-ES

CGZ40 L-ES

CGZ40 M-ES

CGZ40 H-ES

CGZ50 L-ES

CGZ50 M-ES

CGZ50 H-ES

4.1 - 15.7

8.2 - 31.4

6 - 20

20 - 52

39 - 108

26 - 93

44 - 127

88 - 245

63 - 157

128 - 304

245 - 450

2.4 - 8.3 Yellow x 3

Blue x 3

Blue x 6

Yellow x 4

Red x 4

Red x 8

Blue x 5

Red x 5

Red x 10

Red x 5

Red x 10

Green x 10

1800

1800

1800

1800

10SF

25SF

63SF

100SF

0.6

0.7

0.8

0.9

0.7˚

0.7˚

0.6˚

0.6˚

±1.0

±1.0

±1.2

±1.2

4.87

8.5

17.5

25.7

1.29

3.5

11.5

26.6

ModelCrossgard *Coupling

Pilot Bore Max Bore Max BoreA B C D E F G

CGZ20-ES

CGZ30-ES

CGZ40-ES

CGZ50-ES

8

12

17

22

20

30

40

50

45

55

70

75

142

167

202

229

73

82

100

112

48

57

67

75

21

28

35

42

96

118

152

178

114

143

181

202

72

88

110

120


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22

Cross Safegard Overload Clutches

The Safegard CS series Overload Clutches were developed to provide overload protection for the transmission of high torqueswithin a compact unit. Directly interchangeable with other unitsin the market, this series offers low cost protection with aminimum of maintenance and long reliable service life.Safegard CS series are offered in two basic types, the standardtype, available in 6 sizes for bores up to 65mm, with torque rangeof 2.5 to 1800Nm, see pages 24/25, provide optimum speed andtorque capabilities; and the Mini type, available in 4 sizes for boresup to 45mm, with torque range 2.5 to400Nm, see pages 26/27,for a lower cost option for slower speed drives. Both types areavailable as basic clutch, and also as shaft couplings. The basicclutch is offered in three basic designs to enable alternate methodsfor connecting driven components.Four modes of drive operation are available, to suit therequirements of different applications, as outlined below, theprinciples of operation of each being detailed opposite.

The Safegard CSF Clutch uses a large number of equally spaced balls to provide the drive, and the clutch ratchets from onedrive position to the next in the event of an overload. The design allows for high operating speeds, and the possibility to recapture drive in the event of an inertia created overload during starting, but do not provide any synchronisation betweeninput and output.

The Synchron CSY Clutch uses 7 rollers unequally spaced to provide the drive, ensuring that there is only one position of engagement of the drive, enabling full synchronisation between driver and driven shafts.

The Safe Lift CSL Clutch has a retaining ring to prevent disengagement of the drive, but allowing sufficient movement to actuate a limit switch. This clutch is ideal on applications where components cross one another’s path, as synchronisation ismaintained even when clutch has overloaded. The clutch also controls forward inertia drives.

The Contact-Free CSZ Clutch totally disengages in the event of an overload, and requires an outside force to be re-engaged.This enables the clutch to be operated at higher speeds, and also to be used on applications where it is undesirable to stop themotor quickly. The requirement of an external force to re-engage ensures the machine can be checked prior to a restart.

Safegard Series Clutches offer the following operating advantages:

• Long Service Life• Cater for Frequent Overloads• No Maintenance required• Standardised Sizes

• Continued Operating Reliability• Maintained Torque Accuracy• Rapid Drive Disengagement• Very Fine Torque Adjustment

Method of Torque AdjustmentTorque Adjustment on Safegard series Clutches is relatively simple process by the following procedure.

Refer to diagram below, to adjust the Torque on a Clutch first remove screws 8 or 8A to permit free rotation of adjusting nut 7.

If first adjustment manually tighten the adjusting nut 7 until it is in contact with the springs. Insert a C spanner ‘A’ into slots D,or a face wrench ‘C’ into holes D and tighten the nut clockwise to achieve desired Torque as indicated by the number of indents E moved. Replace screw 8 or 8A in thread hole G or G1 with adjusting nut positioned so this lines up with one of the holes H in the locking washer L.

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Cross Safegard CS Clutch Types

During normal operation the drive is transmitted by thesliding hub 2, which is connected by a spline to the mainhub 1, and via a ring of balls 4a to the output flange 3.Drive is maintained by the springs 6 exerting pressure onflange 2, so keeping the balls in their respective indents inflange 2 & 3.

When an overload occurs the balls ride up the indentspushing flange 2 back which will actuate limit switch 9.During overload conditions plain bearing 5 maintains concentricity and ensures free running. The balls will re-engage in the nearest indents when the overload isremoved. Torque adjustment is by rotation of nut 7.

Safegard CSF

The Safelift clutch is of identical design and operation tothe Synchron clutch with the addition of a restricting ring10 which prevents full dis-engagement of the clutch in theevent of an overload; thus maintaining drive at all times.An overload still causes the rollers to ride up the detentssufficient to activate the limit switch 9, but they are prevented from totally disengaging. On these units it is essential that a limit switch is used to turn off the drive.These units are ideal when high inertia loads are involvedto prevent on running of the driven equipment, also theycan be electrically isolated during starting to ignore tripping at that time.Torque adjustment is by rotation of nut 7.

Safe Lift CSL

The Synchron clutch functions in much the same way asthe Safegard, and has similar construction in except theballs 4a are replaced by seven rollers 4b. The rollers areunequally spaced so the clutch will only engage drive inone angular position, providing full synchronisation of thedrive.

When an overload occurs the rollers ride up the indentspushing flange 2 back which will actuate limit switch 9.During overload conditions plain bearing 5 maintains concentricity and ensures free running. The rollers will re-engage in the nearest indents when the overload isremoved. Torque adjustment is by rotation of nut 7.

Synchron CSY

The Contact-free clutch is based on the Synchron clutchwith modification to the outer flange 2, and the addition oflocking assembly parts 10/11/12. In normal drive mode thepressure from the spring is conveyed to the flange 2 via thepressure plate 11and locking ball race 12. In the event of anoverload the flange 2 is still pushed back, but this actionalso forces the locking balls inwards forcing the pressureplate 11 to move back from the locking ring 10. In thetripped condition the locking balls 12 apply no axial load tothe outer flange 2 and thus the clutch will not re-engage,but instead runs totally free. To re-engage drive the outerflange 2 and output flange 3 must be correctly aligned,andthen a light axial load applied to the outer flange to moveit back into engagement.

Contact Free CSZ

10


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CS Standard Series ClutchesThe standard series of clutches are available in 8 sizes offering three modes of operation,simple overload, synchronous overload, and safelift, and in 7 sizes of the total dis-engagement design. All are available with three methods of supporting drive sprockets, pulleys, or gears, to provide flexibility in application design.Type A - allows simple connection of a driven gear with its own bearing support.Type B - has an integral needle roller bearing providing full support of driven gear.Type C - has extended inner race to mount larger pulleys with plain bearings.Up to Four torque ranges are available on each size of clutch, controlled by selection of theactuating spring set, providing a wide range of torque capacities to select from.Inertias are provided for each half of the clutch in dis-engaged condition, the hub inertiaincorporating all items that revolve free with the hub, and the flange inertia all those itemsthat stay with the flange connection.

For Limit Switch location and operation refer to page 29. Always use limit switch for long service life.

*For clutch Part No. for ordering refer to page 27.

A B C

CS Standard Series - Technical Capacities

CS Standard Series DimensionsModels

CSF/CSYand

CSL/CSZ

Dimensions mm

AG7 B C D E F G H J K L L1 L2 N P R U V V1 Wh6 W1 X X1 Y Z

20 41.0 4.0 48 6xM5 6.5 55 50 9 3.0 7.5 38.5 51.5 66 35.0 3.1 6 21 8 27.5 38 28 15 25.5 2 0.125 60.0 4.0 70 6xM5 8.0 82 73 9 6.0 11.5 52.0 70.0 83 48.0 3.1 6 26 10 33.0 50 38 20 35.0 2 0.135 78.0 5.0 89 6xM6 10.0 100 91 9 6.0 12.0 61.0 78.0 100 56.0 3.6 8 36 12 39.0 60 52 25 45.0 2 0.145 90.5 5.0 105 6xM8 12.0 120 112 10 8.5 21.0 78.0 96.0 125 72.0 4.1 10 46 12 47.0 80 65 30 59.0 2 0.155 105.0 6.5 125 6xM10 15.0 146 140 9 11.0 27.0 100.0 124.5 153 93.5 4.1 12 56 16 52.5 100 78 30 60.0 2 0.165 120.5 6.5 155 6xM12 17.0 176 170 9 12.0 33.0 113.5 140.0 171 107.0 4.6 14 66 18 57.5 120 90 30 60.0 2 0.1

80(not CS-Z) 136.0 7.0 160 6xM12 20.0 200 190 9 14.0 39 119 150 183 112.0 5.3 16 82 20 64 130 108 25 55.0 2 0.1CSZ 80 136.0 7.0 160 6xM12 20.0 200 190 9 29.0 53 134 165 198 127.0 5.3 16 82 20 64 130 108 40 70.0 2 0.1

100(not CS-Z) 168.0 8.0 200 6xM16 25.0 240 230 9 15.0 46 141 175 213 133.0 5.8 18 111 25 72 160 135 35 70.0 2 0.1CSZ 100 168.0 8.0 200 6xM15 25.0 240 230 9 33.0 64 159 193 231 151.0 5.8 18 111 25 72 160 135 53 88.0 2 0.1

View from Driven Gear End of Clutches

Models* Torque Range according to Spring Selection Max. Speed Bore Size Weight kg Hub Inertia kgcm2 Flange Inertia kgcm2

A, B & C S M L U R S/M L/U ‘R’ min max Type Type Type Type Type Type Type Type TypeNm Nm Nm Nm Nm rpm rpm rpm mm mm A B C A B C A B C

CSF20 2.5-5.0 5-10 10-20 20-40 3300 1800CSY20 5-10 10-20 20-40 1000 500 7 20 0.5 0.7 0.6 1.0 1.1 1.1 0.9 1.2 0.9CSL20 5-10 10-20 20-40 4000 3000CSF25 6-12 12.3 25-55 55-100 2900 1450CSY25 12-25 25-50 50-100 950 450 10 25 1.5 2.0 1.8 6.7 7.0 7.2 6.2 9.1 6.2CSL25 12-25 25-50 50-100 3900 2900CSZ25 12-25 25-50 50-100 5000 5000CSF35 12-25 25-50 50-120 120-200 2400 1200CSY35 25-50 50-100 100-200 800 400 14 35 2.9 3.2 3.0 19.0 20.5 21.4 14.9 18.2 14.9CSL35 25-50 50-100 100-200 3300 2400CSZ35 25-50 50-100 100-200 4000 4000CSF45 25-50 50-100 100-250 250-400 2000 1000CSY45 50-100 100-200 200-400 650 300 18 45 5.0 6.0 5.8 51.7 54.1 57.0 38.0 48.4 38.0CSL45 50-100 100-200 200-400 2800 2000CSZ45 50-100 100-200 200-400 3500 3500

CSF55(R) 50-100 100-200 200-500 500-800 800-2000 1600 850 90CSY55(R) 100-200 200-400 400-800 800-2000 550 250 90 24 55 9.8 11.8 11.5 163 171 177 100 143 100CSL55(R) 100-200 200-400 400-800 800-2000 2300 1600 700

CSZ55 100-200 200-400 400-800 3000 3000CSF65(R) 85-200 170-500 300-1000 700-1800 1200-3400 1400 700 70CSY65(R) 170-400 350-900 700-1800 1200-3400 400 150 70 30 70* 16.0 20.0 19.0 416 428 439 235 310 235CSL65(R) 170-400 350-900 700-1800 1200-3400 1800 1400 600

CSZ65 170-400 350-900 700-1800 2300 2300CSF80(R) 180-480 360-960 720-1950 1600-3300 2900-5800 1200 600 40CSY80(R) 300-750 600-1500 1200-3000 2900-5800 150 80 40 40 80 21.0 26.0 25.5 769 789 825 396 547 396CSL80(R) 300-750 600-1500 1200-3000 2900-5800 1500 1000 400

CSZ80 300-750 600-1500 1200-3000 1600 1600CSF100(R) 250-520 500-1050 1000-2100 2000-3600 3000-8200 950 480 30CSY100(R) 550-110 1100-2200 2200-4400 3000-8200 100 50 30 50 110* 37.0 44.0 45.0 1968 2030 2109 969 1238 969CSL100(R) 550-110 1100-2200 2200-4400 3000-8200 1300 800 300

CSZ100 550-110 1100-2200 2200-4400 1400 1400


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25

Cross CS Overload ShaftCouplingsCS Standard Series CouplingsFor shaft to shaft connection CS Standard series clutches are available with an elastomeric coupling for all the sizesand modes of operation, simple overload, synchronous overload, or safe lift and total dis-engagement.The elastomeric Coupling permits up to 1/2 degree angular misalignment, with 0.3mm radial and a maximum of0.5mm axial. The rubber element absorbs peak shocks, providing greater accuracy in overload protection.Up to five torque ranges are available on each size of clutch, controlled by selection of the actuating spring set, providing a wide range of torque capacities to select from.Inertias are provided for each half of the clutch in dis-engaged condition, the hub inertia incorporating all items thatrevolve free with the hub, and the coupling inertia all those items that stay with the flexible coupling.

CS Standard Series Couplings - Dimensions

For details on Limit Switch location and operation refer to page 29. Always use limit switch for long service life. *For clutch Part No. for ordering refer to page 27.

A-CC

*The maximum bore on these clutches is only possible with keyways to DIN 6885 sheet 3

CS Standard Series Couplings - Technical Capacities

Models*Torque Range according to Spring Selection

SNm

LNm

UNm

RNm

S/Mrpm

L/Urpm

‘R’rpm min max max

Max. Speed Bore Size mmClutch M Cplg. M1

Weightkg

Inertia kgcm2

Hub Side Cplg Side

ModelsCSF/CSY

andCSL/CSZ

Dimensions

G H J K L L1 N R S T T1 T2 U W Y Z

20A-CC 50.0 9 3.0 7.50 38.5 86.0 34.5 55 67 46 3.0 7 33 38.5 2 0.125A-CC 72.5 9 6.0 11.50 52.0 137.5 48.0 82 112 79 3.5 8 50 54 2 0.135A-CC 90.5 9 5.0 12.00 61.0 147.0 56.0 100 112 79 4.0 10 60 70 2 0.145A-CC 112.0 10 8.5 21.00 78.0 176.5 73.0 120 128 90 4.0 10 70 84 2 0.155A-CC 140.0 9 11.0 27.00 100.0 211.5 93.5 146 148 90 5.5 13 70 108 2 0.1

55A(R)-CC 140.0 9 11.0 27.00 100.0 257.0 93.5 146 198 140 5.5 13 90 108 2 0.165A-CC 170.0 9 12.0 33.00 113.5 242.5 107.0 176 177 107 5.5 13 90 129 2 0.1

65A-CC(1000Nm+) 170.0 9 12.0 33.00 113.5 272.0 107.0 176 198 140 5.5 13 90 129 2 0.165A(R)-CC 170.0 9 12.0 33.00 113.5 312.0 107.0 176 225 180 5.5 13 113 129 2 0.1

80(not CSZ)A-CC 190.0 9 14.0 39.00 119.0 299.5 183.0 112 225 180 15.0 24 113 150 2 0.1CSZ 80A-CC 190.0 9 29.0 53.00 134.0 314.5 198.0 127 225 180 15.0 24 113 150 2 0.1

100(not CSZ)A-CC 230.0 9 15.0 46.00 141.0 339.0 213.0 133 255 200 21.0 30 127 186 2 0.1CSZ 100A-CC 230.0 9 33.0 64.00 159.0 357.0 231.0 151 255 200 21.0 30 127 186 2 0.1

CSF20 2.5-5.0 5-10 10-20 20-40 3300 1800CSY20 5-10 10-20 20-40 1000 500 7 20 30 1.2 1.0 6.1CSL20 5-10 10-20 20-40 4000 3000CSF25 6-12 12.3 25-55 55-100 2900 1450CSY25 12-25 25-30 50-100 0950 0450 10 25 50 5.0 6.7 71.8CSL25 12-25 25-50 50-100 3900 2900CSZ25 12-25 25-50 50-100 5000 5000CSF35 12-25 25-50 50-120 120-200 2400 1200CSY35 25-50 50-100 100-200 0800 0400 14 35 50 6.4 19.0 81.0CSL35 25-50 50-100 100-200 3300 2400CSZ35 25-50 50-100 100-200 4000 4000CSF45 25-50 50-100 100-250 250-400 2000 1000CSY45 50-100 100-200 200-400 0650 0300 18 45 60 10.6 51.7 148.5CSL45 50-100 100-200 200-400 2800 2000CSZ45 50-100 100-200 200-400 3500 3500

CSF55(R) 50-100 100-200 200-500 500-800 800-2000 1600 0850 090CSY55(R) 100-200 200-400 400-800 800-2000 0550 0250 090 24 55 60 15 163 279CSL55(R) 100-200 200-400 400-800 800-2000 2300 1600 700 90 (R type) 26 500

CSZ55 100-200 200-400 400-800 3000 3000CSF65(R) 85-200 170-500 300-1000 700-1800 1200-3400 1400 700 070 70 27 734CSY65(R) 170-400 350-900 700-1800 1200-3400 0400 0150 070 30 70* 90 (over 1000Nm) 416 36 980CSL65(R) 170-400 350-900 700-1800 1200-3400 1800 1400 600 115 (R type) 42 1350CSZ65 170-400 350-900 700-1800 2300 2300CSF(80R) 180-480 360-960 720-1950 1600-3300 2900-5800 1200 0600 040CSY80(R) 300-750 600-1500 1200-3000 2900-5800 0150 0080 040 40 80 115 48 769 1580CSL80(R) 300-750 600-1500 1200-3000 2900-5800 1500 1000 400

CSZ80 300-750 600-1500 1200-3000 1600 1600CSF100(R) 250-520 500-1050 1000-2100 2000-3600 3000-8200 0950 0480 030CSY100(R) 550-1100 1100-2200 2200-4400 3000-8200 0100 0050 030 50 110* 125 70 1968 2500CSL100(R) 550-1100 1100-2200 2200-4400 3000-8200 1300 0800 300

CSZ100 550-1100 1100-2200 2200-4400 1400 1400


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26


CS Mini Series ClutchesThe CS Mini series of clutches is available in 4 basic sizes with simple overload, and synchronous overload facilityThese lower cost units are offered with two methods to attach sprockets. gears, or pulleys.Type E - allows connection of driven gear with its own external bearing support.Type F - has extended inner race suitable to mount larger pulleys with a bronze or needle roller bearing.Four torque ranges are available on standard units, and three on the synchronous version, providing a wide range oftorque capacity to select from.The series is suitable for moderate speed applications with low radial forces and infrequent tripping. The design issuited to inline stop switch, or proximity switch.

E F

CS Mini Series - Technical Capacities Models*

E & F

Torque Range according to Spring Selection

SNm

MNm

LNm

UNm

S/Mrpm

L/Urpm

minmm

maxmm

Max. Speed Bore sizeWeight

kgInertiakgcm2

CS Mini Series Dimensions

Emergency Stop Switch Location and Operation - Switch CSS2The Stop Switch (available separately) should be used on all applications.

(1) Safegard Mini - (2) Synchron Mini

ModelsCSF &CSY

Dimensions mm

Ah8 Bh8 C D E E1 F G H K L L2 N P R V V1 Wh7 CH

20

25

35

45

36

46

64

78

55

70

90

115

46

59

80

100

6xM5

6xM5

6xM6

6xM6

11.5

16.5

16.5

22.0

4.5

5.5

6.5

8.0

5.5

7.0

7.0

8.0

21.7

23.2

29.0

34.5

53

74

88

114

38

54

70

86

50

57

65

81

83.5

94.0

108.0

127.0

3

4

4

5

2.8

3.5

4.0

4.0

80

100

120

150

47.5

59.0

85.5

98.5

40.5

48.0

53.0

60.0

30

35

50

65

7

8

10

10

ClutchSize

Z1

(1)mm

(2)mm

20

25

35

45

1.4

1.4

2.4

2.4

1.2

1.2

1.8

2.0

For Clutch Part No. for orderingrefer to page 27

CSF20

CSY20

CSF25

CSY25

CSF35

CSY35

CSF45

CSY45

2.5-5.0

5-10

6-12

12-25

12-25

25-50

25-50

50-100

5-10

10-20

12-25

25-50

25-50

50-100

50-100

100-200

10-20

20-40

25-55

50-100

50-120

100-200

100-250

200-400

20-40

55-100

120-200

250-400

800

700

800

700

800

700

800

650

800

500

700

450

600

400

500

300

7

10

14

18

20

25

35

45

0.5

1.5

2.5

5.0

2.7

7.6

25.0

81.0

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CS Mini Series Couplings

CS Mini Series CouplingsFor shaft to shaft connection CS Mini series clutches are available with an elastomeric coupling for all the sizes andmodes of operation, simple overload, synchronous overload.The elastomeric Coupling permits up to 1/2 degree of angular misalignment, with 0.3mm radial, and a maximum of0.5mm axial. The rubber element absorbs peak shocks, providing greater accuracy in overload protection.Up to four torque ranges are available on each size of clutch, controlled by selection of the actuating spring set,providing a wide range of torque capacities to select from.The series is suitable for moderate speed applications with low radial forces and infrequent tripping. The design issuited to inline stop switch, or proximity switch, see page 26.

Catalogue Part NumbersTo order Safegard series clutches it is essential to identify clutch type, size (refers to max bore capacity), connectionflange design, and spring ratings for correct torque, (see rating for each clutch).

Examples Clutch Reference is a Safegard (type CSF) size 35, design A with M rated springs (25-50 Nm).is a Synchron (type CSY) size 25, design E (Mini Series) with L ratedsprings (50-100 Nm).

Couplings are identified by suffix - CC, e.g. CSY 25E/L - CC is coupling version of above clutch. Clutchescome with pilot bores, but can be supplied finish bored if specified on order.

ModelsCSF/CSY

Dimensions

E F G K L1 N R S T T1 T2 U W

CS Mini Series Couplings - Dimensions

E-CC

*For clutch Part No. for ordering refer below

CS Mini Series Couplings - Technical Capacities

Models*Torque Range according to Spring Selection

SNm

LNm

UNm

S/Mrpm

L/Urpm min max max

Max. Speed Bore Size mmClutch M Cplg. M1

Weightkg

Inertia

kgcm2

CSF20E-CC

CSY20E-CC

CSF25E-CC

CSY25E-CC

CSF35E-CC

CSY35E-CC

CSF45E-CC

CSY45E-CC

2.5-5.0

5-10

6-12

12-25

12-25

25-50

25-50

50-10

5-10

10-20

12-25

25-50

25-50

50-100

50-100

100-200

10-20

20-40

25-55

50-100

50-120

100-200

100-250

200-400

20-40

55-100

120-200

250-400

800

700

800

700

800

700

800

650

800

500

700

450

600

400

500

300

7

10

14

18

20

25

35

45

30

35

50

60

1.2

2.5

5.2

10.0

8

21

91

205

20E-CC

25E-CC

35E-CC

45E-CC

11.5

16.5

16.5

22.0

5.5

7.0

7.0

8.0

53

74

88

114

21.7

23.2

29.0

34.5

84.5

98.0

132.0

155.0

50

57

65

81

80

100

120

150

67

82

112

128

46

53

79

90

2.8

3.5

4.0

4.0

7

8

10

10

37

48

66

81

38

54

70

86

CSF 35A/MCSY 25E/L

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ENGAGEDAt Maximum Torque Setting At Minimum Torque Setting

DISENGAGED ENGAGED DISENGAGED

28

Series CZ and CN Zero BacklashSafegard Overload ClutchZero backlash Overload Clutches and Couplings, series CZ and CN,available in 8 different basic types, and 12 basic sizes, for shaftdiameters from 8mm to 60mm; providing Overload Protectionfor Torque values from 5Nm to 740Nm.The CZ series Safegard overload clutches were developedto provide a totally backlash free transmission of power witha very responsive overload protection. These compact unitsare directly interchangeable with existing designs in the marketproviding a cost advantage with long reliable service life.Two basic modes of operation are available, the basic CZF/CNFSafegard ratchetting design with the driving balls equally spaced so that clutch can re-engage after a small angle of rotation, and the Synchron CZY/CNY design with the ballsunequally spaced so that clutch can only re-engage after a full revolution so providing full synchronisation between driver anddriven. Responsive overload reaction is obtained by the use of negative functioning Disc Springs to apply drive load. In the eventof an overload the spring load actually decreases, allowing fasterdis-engaging of the drive, and minimal pressure on the drivingsurface in the dis-engaged mode, reference diagrams below.

Method of OperationDuring normal operation the CZ/CN Overload Clutches transmitsthe torque from the Hub (1) to the Flange (3) by a numberof hardened steel balls (4) located in pockets in the Hub,and forced into matching seats in the Flange by the DiscSpring (6) applying load to the Pressure Flange (2).In the event that the Driving Torque exceeds the pre-set value,the reaction forces on the Steel Balls exceeds the force appliedby the Pressure Flange, and the Balls start to ride-up out of theirseats in the Flange (3). This action reduces the spring load, soallowing the Balls to quickly come out of their seats, so releasingthe drive. The action of the Balls dis-engaging moves the PressureFlange to the right so activating the stop switch (9).Re-engagement is automatic once the torque level drops below thepre-set value. The Synchron design re-engages only at one angularposition to keep Hub and Flange accurately synchronised at all times.The Disc Springs work only in the negative area of their characteristicsso unscrewing the Adjusting Nut (7) increases the axial load of the Springs,so increasing dis-engaging torque. When desired Torque setting is achieved the Adjusting Nut is locked by the Bolt (8)being screwed into the locking Collar (10).

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Series CZ and CN SafegardOverload Clutch

Overload Sensor SwitchesIt is strongly recommended that all installations should include a Limit Switch or Sensor to switch off the power inevent of an overload. The following are standard units available with mounting instructions.

a) Proximity Sensor Switchfor Radical mounting - CSS3

a) Proximity Sensor Switchfor Axial movement - CSS4

Clutch Engaged

Clutch Tripped

Wiring Connections for ProximitySensor - Models CSS3 & CSS4

Wiring for Limit SwitchModel CSS1

a) Mechanical Limit Switchfor contact actuation - CSS1

Clutch Engaged

Clutch Tripped

Sensor SwitchPosition

220-250VAC/15A24 VDC/6A

IP-54

For other clutch types refer torespective dimension tables.

24VDC/6AIP-54

Outer Movement in OverloadCS Z mm CZ/ z

CLUTCH CFS CSY CSL CSZ R CN mm

20 1.4 1.2 0.6 1.6 - 11 0.8

25 2.3 1.8 0.8 2.3 - 16 1.0

35 2.4 2.0 1.1 3.0 - 20 1.2

45 2.7 2.2 1.2 3.5 - 25 1.2

55 3.7 2.5 1.2 3.8 2.5 30 1.5

65 4.6 3.0 1.6 4.5 2.3 40 1.8

80 5.0 3.5 2.5 - 3.5 50 2.0

100 5.5 4.0 2.7 - 2.4 60 2.2

CZ/CN Series Clutches and Couplings Torque AdjustmentReferring to drawing alongside Torque setting of the Clutches can be made using either a suitable size ‘C’ Spanner (A), or acorrect size Pin Wrench (C). First release Adjusting Nut (7)by removing the Locking Screw (8), then rotate the Nutclockwise until at end of stroke (do not apply excess force).Then rotate nut back anti-clockwise by one indent to reachthe neutral position, corresponding to minimum torque. Thencontinue to turn Adjusting Nut anti-clockwise for the numberof indents indicated on the label (F) on the outside of Clutchfor required Torque. Put Threadlock on Locking Screw, andreplace in one of the threaded holes (G) which aligns with a hole in the Locking Plate behind.


INDEX BACK NEXT

Series CZ Safegard OverloadClutches Standard Plain BoreUnits

Clutch Size

A B Ch5

D E E1 F G G1 H J K L L1 Mmin max

N P Rh6

T T1 Z CHA/F

2530405060

658095

110130

567185

100116

47627590

100

8x M48x M58x M68x M68x M8

579

1010

3343556773

7.58.0

10.512.012.0

811141618

6.58.8

11.513.014.0

789

1012

54.569.077.087.5

106.0

1214161721

4048596475

6580

100115130

810141824

20*30*35*

45*50*

637788

100122

7085

100115135

3040455565

55567

2.82.83.54.04.0

1.21.51.82.02.2

778

1010

30


*For clutch Part No. for ordering refer bottom of page

CZ Series types H & K - Dimensions

Clutch Part Numbers for OrderingTo correctly order CZ series clutches it is essential to identify the clutch operating mode, size, type, spring ratings(torque range), and for clutches and couplings using Clamping Elements for shaft connection, the shaft diameters.Operating Mode: CZ series clutches are available with two operating modes, ratchetting type CZF for applicationswhere synchronisation of input to output is not required, and single position type CZY for full synchronisation.Clutch Size: The clutch size generally indicates the max bore size, and is identified in the tables.Clutch Type: A letter from H to T indicates the clutch/coupling design, as shown in the respective drawings.For couplings type M and N it is required to indicate the coupling size also, e.g. for Coupling size 40-72 type Mthe reference is M72, for couplings P,R & T it is necessary to indicate rubber shore value ie.P92 is with rubber 92 shore.Spring Rating: following a / the letter S, M, or U indicates the Spring sizes selected, which controls the torque range. Bore Sizes: Except for pilot bored types H, K and M it is essential that the finish bore sizes of the Clutch/Couplingare provided to enable supply of the unit. Types H, K and M can be supplied with finish bores also if specified.

Examples

CZF40H/M is a Ratchetting size 40 clutch type ‘H’ with spring selection M.CZY50L/S-40 is a Synchronous size 50, type L, with spring set S, fitted with 40mm clamping bush.CSY40N89/U-35/40 is a Synchronous Coupling size 40, type N, with spring set U, with the clutch half

fitted with a 35mm clamping bush, and the coupling half with a 40mm clamping bush.CSY50M89/S-38/48 is a Synchronous Coupling size 50, type M, with spring set S, with the clutch half

bored and keyed for a 38mm shaft, and the coupling half bored and keyed for 48mm.

Standard Zero Backlash Clutches types H&KThese clutches are intended forkeyway connection to shafts wherepre-machined synchronisation isthe preferred design. Type H is usedto mount compact drive systems withminimal overhung load, the singledeep groove ball bearing providingfull radial support for the sprocket,pulley, or gear.Type K has an extended inner raceto support a second Bearing toallow fitment of wider transmissionelements, and where high radial loadsmay be encountered.

CZ Series types H & K - Technical Capacities Models

H&KClutch Size

25

30

40

50

60

3-14

9-35

19-65

35-110

80-185

6-28

18-70

38-130

80-220

160-370

13-56

40-140

78-260

160-440

320-740

4000

3000

2500

2000

1200

8

10

14

18

24

20

30*

35*

45*

50

0.74

1.37

2.28

3.29

5.12

0.83

1.41

2.56

3.74

5.73

2.15

5.30

13.68

27.62

66.45

2.22

5.58

14.58

29.88

72.01

0.95

2.35

6.45

13.07

26.52

Torque Range according to Spring selection Max.Speed Bore Size 'M' Weight kg Hub Inertia kgcm2 Flange

SNm

MNm

UNm

rpm minmm

maxmm

TypeH

TypeK

TypeH

TypeK

Inertiakg m2

*max bore achievable only with keyway according to DIN 6885 Sheet 3

Type H Type K

Te

l: +4

4 1

21

36

0 0

15

5 F

ax

: +4

4 1

21

32

5 1

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9 E

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Te

l: +4

4 1

21

36

0 0

15

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: +4

4 1

21

32

5 1

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Standard Units With Expanding Bush Shaft ConnectionZero Backlash Clutch for keyless shaftconnection types J & L. These clutches provide totally backlash free connectionof drive gears and sprockets to shafts.A selection of clamping inserts provides a wide range of shaft diameters to be accommodated. Type J can be used to mount compact drive systems, with minimal overhung load, the single deep groove ball bearing providing full radial support. Type L has extended inner race to support a second bearing to enable fitting of wider transmission elements.

31

Series CZ Safegard OverloadClutches

CZ Series types J & L - Dimensions


*For clutch Part No. for ordering refer to page 30.

CZ Series types J & L - Technical Capacities

Standard Bore sizes available on J & L type clamping hubs, with respective maximum transmittable Torques

Shaft tolerance required for correct operation is h6 up to 40mm dia., h7 for over 40mm.

Typical Mounting Arrangements with Timing Pulleys

Type JPulley directMounted

Type Lwith Pulley onNeedle Roller Bearing

Type L with pulleysupported by plainbearing

25

30

40

50

60

3-14

9-35

19-65

35-110

80-185

6-28

18-70

38-130

80-220

160-370

13-56

40-140

78-260

160-440

320-740

4000

3000

2500

2000

1200

10

15

19

32

32

25

30

40

50

60

0.72

1.26

2.11

2.98

4.75

0.81

1.50

2.39

3.43

5.36

2.29

5.90

14.75

30.34

71.94

2.36

6.17

15.66

32.60

77.18

0.95

2.35

6.45

13.07

26.52

Torque Range according to Spring selection Max.Speed Bore Size 'M1' Weight kg Hub Inertia kgcm2 Flange

rpm

Models* J & L

Clutch SizeS

NmM

NmU

Nmminmm

maxmm

TypeJ

TypeL

TypeJ

TypeL

Inertiakgcm2

43.54

V Size

A B Ch5

D E E1 F G G1 K1 L2 L3 M1

min maxP R

h6S T2 U U1 V1 W Z CH1

A/F

25

30

40

50

60

65

80

95

110

130

56

71

85

100

116

47

62

75

90

100

8x M4

8x M5

8x M6

8x M6

8x M8

5

7

9

10

10

33

43

55

67

73

7.5

8.0

10.5

12.0

12.0

8

11

14

16

18

6.5

8.8

11.5

13.0

14.0

12

12

14

16

21

40

46

57

63

75

65

78

98

114

130

101915

70

85

100

115

135

30

40

45

55

65

1.2

1.5

1.8

2

2.2

2.8

4

42

49

60

66.5

47

56

67

73

19323232

55

20 25 30

3040505060

40.54257576473.573.589

26.526314031292945.54 78.5

78

67

81

101

118134133

8586

72

88

108

124140141 10

10

7

10108

Clutch

Clutch Size

Available Bore sizes in mm (Figures indicate max. transmittable Torque Nm)

25 65 70 75 90 95 100 115 120 130 140 150 16030 120 130 150 160 180 190 210 220 240 26040 240 260 290 310 320 360 39040 440 480 520 55050 620 680 730 770 810 870 930 97060 620 680 730 770 810 870 930 970 1070 1160

10 11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 55 60

BoltTorque

Nm

31010 5.91010

Type J Type L


INDEX BACK NEXT

32

Standard CZ series Zero Backlash Overload Clutches combined with a Torsionally stiff. Steel Disc Coupling for ultimate shaft to shaft positional accuracy, with full overload protection. Available with keyed shaft connection, ortotally keyless with shaft clamping elements.

Series CZ Safegard OverloadCouplings

For clutch Part No. for ordering refer to page 30.*max bore achievable only with keyway according to DIN 6885 Sheet 3

CZ Series Couplings types M & N - Technical Capacities

CZ Series Couplings types M & N - Dimensions

Standard Bore sizes available on N type Clutch clamping hubs, with respective maximum transmittable Torques

Standard Bore sizes available on N type Coupling half clamping hubs, with respective maximum transmittable Torques

Shaft tolerances required for correct operation is h6 up to 40mm dia., h7 for over 40mm., for both Clutch and CouplingDisc Bolt Torque is for the bolts on the Flexible Disc Plate

ModelsM & N

CouplingSize

Torque RangeAccording to Spring Type

Speed Max.

rpm

Coupling Type M Bore SizesClutch Hub Coupling Hub

Coupling Type N Bore SizesClutch Hub Coupling Hub

Weight Hub Inertia Flange Inertia Max. MisalignmentCoupling

Angulardegrees

Axialmm

SNm

MNm

UNm

M minmm

M maxmm

M2 minmm

M2 maxmm

M1 minmm

M1 maxmm

M3 minmm

M3 maxmm

TypeMkg

TypeNkg

TypeM

kgcm2

TypeN

kgcm2

TypeM

kgcm2

TypeN

kgcm2

25-53

30-72

40-72

40-89

50-89

60-118

3-14

9-35

19-65

19-65

35-110

80-185

6-28

18-70

38-130

38-130

80-220

160-370

13-56

40-140

78-260

78-260

160-430

320-740

4000

3000

2500

2500

2000

1200

8

10

12

12

16

22

20

28

35*

35*

45*

50

6

10

10

14

14

15

25*

35

35

50*

50*

65

10

15

19

19

32

32

25

30

40

40

50

60

11

19

19

24

24

32

20

30

30

42

42

60

1.2

2.4

3.5

4.3

5.5

9.4

1.2

2.0

3.4

3.6

4.8

7.8

2.15

5.30

13.68

13.68

27.62

66.45

2.22

5.58

14.58

14.58

29.88

72.01

2.42

6.92

16.55

16.55

34.03

43.52

2.47

7.06

16.88

26.12

34.71

44.39

1

1

1

1

1

1

0.4

0.5

0.5

0.6

0.6

0.8

DimensionsModelsM & NSize

K K1 L L4 L5 L8 N P P1 P2 P3 S S1 T1 T2 T3 V W W1 X Y Y1 Z CH CH1 CH2MAX MAX MAX MAXMIN MIN

25-5330-7240-7240-8950-8960-118

121416161721

121214141621

404859596475

87.5113.0126.5142.5145.0172.5

95.5114.5128.0150.0153.5162.5172.5

283443434754

63778888100122

7085100100115135

65809797111131

5372728989118

324747626282

425757647489

425858727292

2.82.83.53.54.04.0

2.84.04.03.54.04.0

466666

475667677386

263140312929

26.53131454529

41.550.062.062.066.576.5

24.539.539.545.045.055.0

25.533.033.044.544.535.044.0

1.21.51.81.82.02.2

7788

1010

71010

81010

355555

ClutchSize

253040405060

10 11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 55 60

65 70 75 90 95120

100130

115150

120160240

130180260

140190290

150210310

160220320

240360

260390

440620620

480680680

520730730

550770770

810810

870870

930930

970970 1070 1160

31010 5.91010

BoltTorque

Nm


ClutchSize

25-5330-7240-7240-8950-8960-118

11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50

80 87 102 108146

116155

130175

138210210

145220220

242242

265265529529

276276552552

309309618618

331331662662

706706730

772772798

839839866

883883912

926926958 1026 1094 1140

688

151533

DiscBolt Torque

Nm


51717171717

ElementBolt Torque

Nm

Type M Type N

Te

l: +4

4 1

21

36

0 0

15

5 F

ax

: +4

4 1

21

32

5 1

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Series CZ Safegard OverloadCouplingsStandard Keyless Connection Overload Clutches with Elastomeric Couplings

Couplings type T is identical to type P except coupling hub is not split, and hub suitable for standard reworkingCouplings are supplied standard with 92 Shore rubber inserts, but 98 shore can be supplied to order

CZ Series Couplings types P, R & T - Technical Capacities

For Clutch Part No. for ordering refer to page 30.*max bore achievable only with keyway according to DIN 6885 Sheet 3

CZ Series Couplings types P, R & T - Dimensions

Standard Bore sizes available on P, R & T type Clutch clamping hubs, with respective maximum transmittable Torques

Standard Bore sizes available on P type Coupling clamping hubs, with respective maximum transmittable Torques

Standard Bore sizes available on R type Coupling clamping hubs, with respective maximum transmittable Torques


ModelsP, R&TClutchSize

Torque RangeAccording to Spring Type

Speed Max.

rpm

Nominal TorqueFlexible Coupling

Coupling Hub Bore Sizes*

Cplg Types P & T Cplg Type R

Weight Hub Inertia

kgcm2

Max. Misalignment of CouplingAxial

mm

TypeP & T

kg

TypeRkg

25

30

40

50

60

3-14

9-35

19-65

35-110

80-185

6-28

18-70

38-130

80-220

160-370

13-56

40-140

78-260

160-440

320-740

70

190

380

530

620

120

320

650

900

1050

4000

3000

2500

2000

1200

10

15

19

32

32

25

30

40

50

60

10

14

15

20

25

28

38

45

48

55

28

38

45

55

60

15

19

20

28

30

28

38

45

50

55

1.38

3.47

4.48

6.59

10.71

1.53

3.67

4.48

6.59

10.71

2.2

5.6

14.6

29.9

72.0

4.00

10.00

20.00

50.00

114.00

1.4

1.5

1.8

2.0

2.1

0.14

0.15

0.17

0.19

0.23

1

1

1

1

1

0.11

0.12

0.14

0.16

0.10 0.9

0.9

0.9

0.9

0.9

Clutch HubBore Sizes*

SNm

MNm

UNm

92 Sh.ANm

98 Sh.ANm

M1 minmm

M1 maxmm

M4 minmm

M4 (P)max mm

M5 minmm

M5 maxmm

M4 (T)max mm

Flange Inertia

kgcm2

92 Shore A 98 Shore ARadial

mmAng.deg.

Radialmm

Ang.deg.

DimensionsModelsP & RSize

AA AB AC H J K1 L6 L7 N P P5 P6 P7 P8 S T T1 T2 V W X2 Z CH CH1 CH3 CH4 MAXMAX MIN

2530405060

3035455056

---

2832

10.511.515.518.021.0

789

1012

54.569.077.087.5

106

1212141621

102120146159213

102120146159213

637788100122

7085

100115135

7085

100115135

55658095

105

---

8595

55658095

105

42.057.064.073.589.0

55567

2.82.83.54.04.0

2.84.04.04.04.0

4756677385

26.531.040.029.045.5

47.054.567.073.087.0

1.21.51.822.2

778

1010

710

8/101010

5668

10

44568

MAX MAX

ClutchSize

253040405060

10 11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 55 60

65 70 75 90 95120

100130

115150

120160240

130180260

140190290

150210310

160220320

240360

260390

440620620

480680680

520730730

550770770

810810

870870

930930

970970 1070 1160

31010 5.9 1010

BoltTorque

Nm


BoltTorque

Nm

Available Bore sizes in mm (Figures indicate max. transmittable Torque Nm)ClutchSize

2530405060

10 11 14 15 16 19 20 24 25 28 30 32 35 38 40 42 45 48 50 55

34 35 3680

388192

398194

398598

418799

232

4391

104244

4592

105246393

4697

109255405

99112260413

102113266421

105118274434

109122283445

123288454

126294462

130301473

309486 494 514

10.5252569

120

BoltTorque

Nm

Available Bore sizes in mm (Figures indicate max. transmittable Torque Nm)ClutchSize

2530405060

11 14 15 16 19 20 24 25 28 30 32 35 38 40 42 45 48 50 55

48 67 74142

72154

90188

97189269

112237337

120250356399

143280398445

307436470775

310442506819

353501566955

389533581999

572630

1090

585647

1091

644728

1230836

1334858

1381 1540

66

103569

Type P (and T) Type R

33

Te

l: +4

4 1

21

36

0 0

15

5 F

ax

: +4

4 1

21

32

5 1

07

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Series CN Safegard OverloadClutches Standard Plain BoreUnits

34


*For clutch Part No. for ordering refer bottom of page

CN Series types H & K - Dimensions

Clutch Part Numbers for OrderingTo correctly order CN series clutches it is essential to identify the clutch operating mode, size, type, spring ratings(torque range), and for clutches and couplings using Clamping Elements for shaft connection, the shaft diameters.Operating Mode: CN series clutches are available with two operating modes, ratchetting type CNF for applicationswhere synchronisation of input to output is not required, and single position type CNY for full synchronisation.Clutch Size: The clutch size generally indicates the max bore size, and is identified in the tables.Clutch Type: A letter from H to L indicates the clutch design, as shown in the respective drawings.Spring Rating: following a / the letter S, M, L or U indicates the Spring sizes selected, which controls the torque range.Bore Sizes: Except for pilot bored types H and K it is essential that the finish bore sizes of the Clutch/Couplingare provided to enable supply of the unit. Types H, K and M can be supplied with finish bores also if specified.

Examples

CNF40H/M is a Ratchetting size 40 clutch type ‘H’ with spring selection M.CNY50L/S-40 is a Synchronous size 50, type L, with spring set S, fitted with 40mm clamping bush.

Standard Zero Backlash Clutches types H&KThese clutches are intended forkeyway connection to shafts wherepre-machined synchronisation isthe preferred design. Type H is usedto mount compact drive systems withminimal overhung load, the singledeep groove ball bearing providingfull radial support for the sprocket,pulley, or gear.Type K has an extended inner raceto support a second Bearing toallow fitment of wider transmissionelements, and where high radial loadsmay be encountered.

CN Series types H & K - Technical Capacities


Type H Type K

Models Torque Range according to Spring selection Max. Speed Bore Size ‘M’ Weight kg Hub Inertia kgcm2 FlangeH&K S M L U rpm min max Type Type Type Type Inertia

Clutch Size Nm Nm Nm Nm mm mm H K H K kg m2

11 0.65 - 3.0 1.3 - 6 2 - 9 2.6 - 12 4000 6 11 0.17 0.19 0.27 0.26 0.08

16 2 - 5 4 - 10 6 - 15 8 - 20 4000 8 *16* 0.26 0.30 0.54 0.55 0.2

20 4 - 10 8 - 20 12 - 30 16 - 40 4000 9 20 0.51 0.59 1.8 1.8 0.6

25 4 - 14 8 - 28 12 - 42 16 - 56 4000 12 20 0.89 1.06 4.6 4.8 1.8

30 9 - 35 18 - 70 27 - 105 40 - 140 3000 15 25 1.62 1.77 11.8 12.1 3.9

40 19 - 65 38 - 130 57 - 195 78 - 260 2500 22 *35* 2.86 3.28 27.0 27.6 7.7

50 35 - 110 80 - 220 120 - 330 160 - 440 2000 32 45 3.72 4.80 61.5 65.3 17.3

Clutch A B C D E E1 F G G1 H J K L L1 H1 H2 P9 N P R T T1 Z CHSize h5 h6 A/F

11 40 35 30 6XM3 2 20.5 5 4.5 3.0 6 32 7.0 24 40 – – – 39.5 45 17 4 2.1 0.8 5.516 47 42 37 6xM3 2 25 6 5.0 5.0 8 36.5 9.5 29 49 – – – 43 50 25 4 2.1 1.0 5.520 60 53 47 6XM4 3 31 7 5.0 5.0 9 36.5 9.5 33 58 – – – 43 65 30 4 2.1 1.2 5.525 77 69 62 6XM5 4 35 7.5 5.5 5.5 – 54.5 10.2 41 68 14.9 7.5 75 63 80 35 5 2.8 1.2 7.030 90 80 68 6xM6 5 40 8 6.5 6.5 – 69 11.0 47 77 17.4 7.5 90 77 95 40 5 4.0 1.5 7.040 106 90 80 6XM6 5 48 9 7.0 7.0 – 77 12.6 52 90 20.0 8.0 105 88 110 50 5 4.0 1.8 8.050 125 112 100 6XM8 5 60 11 7.5 7.5 – 87.5 14.7 59 109 23.5 9.0 125 100 130 65 6 4.0 2.0 10

ø P9

H2H1

Sizes25 ÷ 50

Te

l: +4

4 1

21

36

0 0

15

5 F

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: +4

4 1

21

32

5 1

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Te

l: +4

4 1

21

36

0 0

15

5 F

ax

: +4

4 1

21

32

5 1

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9 E

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Standard Units With Expanding Bush Shaft ConnectionZero Backlash Clutch for keyless shaftconnection types J & L. These clutches provide totally backlash free connectionof drive gears and sprockets to shafts.A selection of clamping inserts provides a wide range of shaft diameters to be accommodated. Type J can be used to mount compact drive systems, with minimal overhung load, the single deep groove ball bearing providing full radial support. Type L has extended inner race to support a second bearing to enable fitting of wider transmission elements.

35

Series CN Safegard OverloadClutches

Type J Type L


*For clutch Part No. for ordering refer bottom of page 34

CN Series types J & L - Dimensions

CN Series types J & L - Technical Capacities


Models Torque Range according to Spring selection Max. Speed Bore Size ‘M1’ Weight kg Hub Inertia kgcm2 FlangeJ&L S M L U rpm min max Type Type Type Type Inertia

Clutch Size Nm Nm Nm Nm mm mm J L J L kgcm2

11 0.65 - 3.0 1.3 - 6 2 - 9 2.6 - 12 4000 6 11 0.18 0.2 0.25 0.28 0.08

16 2 - 5 4 - 10 6 - 15 8 - 20 4000 8 *16* 0.28 0.32 0.51 0.58 0.2

20 4 - 10 8 - 20 12 - 30 16 - 40 4000 9 20 0.55 0.63 1.7 1.8 0.6

25 4 - 14 8 - 28 12 - 42 16 - 56 4000 12 20 0.94 1.11 4.6 4.9 1.8

30 9 - 35 18 - 70 27 - 105 40 - 140 3000 15 25 1.63 1.78 11.5 12.5 3.9

40 19 - 65 38 - 130 57 - 195 78 - 260 2500 22 *35* 3.03 3.45 26.3 28.4 7.7

50 35 - 110 80 - 220 120 - 330 160 - 440 2000 32 45 3.95 5.03 59.5 67.1 17.3

Clutch A B C D E E1 F G G1 K1 L2 L3 P R H1 H2 P9 M1 M1 S T2 V V1 W Z CH1

Size h5 h6 min max A/F

11 40 35 30 6xM3 2 21 5 4.5 3.0 7 24 40 45 17 – – – 6 12 25 2.1 29 45 13 0.8 5.516 47 42 37 6xM3 2 25 6 5.0 5.0 9.5 29 49 50 25 – – – 8 16 30 2.1 34 54 19 1.0 5.520 60 53 47 6xM4 3 31 7 5.0 5.0 9.5 33 58 65 30 – – – 9 16 30 2.1 38 63 19 1.2 5.5

25 77 69 62 6xM5 4 35 7.5 5.5 5.5 10 41 68 80 35 14.9 7.5 75 10 20 41 2.8 46 75 26 1.2 7.019 25 4230 90 80 68 6xM6 5 40 8 6.5 6.5 11 47 77 95 40 17.4 7.5 90 15 30 57 4.0 57 87 31 1.5 10

40 106 90 80 6xM6 5 48 9 7.0 7.0 13 52 90 110 50 20.0 8.0 105 19 30 57 4.0 62 100 40 1.8 1032 40 64 3.5 3150 125 112 100 6xM8 5 60 11 7.5 7.5 15 59 109 130 65 23.5 9.0 125 32 50 74 4.0 69 119 29 2.0 10


Standard Bore sizes available on J & L type clamping hubs, with respective maximum transmittable Torques

Clutch Available Bore sizes in mm (Figures indicate max. transmittable Torque Nm) BoltTorqueSize 6 8 9 10 11 12 14 15 16 18 19 20 22 24 25 28 30 32 35 38 40 42 45 48 50 Nm

11 13 18 20 23 25 28 2.2

16 28 30 34 37 41 48 51 54 1.7

20 28 30 34 37 41 48 51 54 1.7

25 65 70 75 90 95 100 115 120 130 140 150 160 3

30 95 100 115 160 180 190 210 220 240 260 10

40 240 260 290 310 320 360 390 10

40 440 480 520 550 5.9

50 620 680 730 770 810 870 930 970 10

ø P9

H2H1

Sizes25 ÷ 50


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21

36

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15

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Series CP SafegardPneumatically operated OverloadClutch

36

*d max with keyway according to DIN6885/3

CP Pneumatic Overload Clutches operating featuresCP Clutches are zero backlash units which provide remote accurate adjustment of the overload torque by air pressure adjustment. The torquecan be constantly adjusted throughout a production cycle providing optimum machine protection.CP Overload Clutches can be integrated into complex control systems withsubstantial advantage in automatic machinery with continuous changes ofoperating conditions. A stop switch is integrated in the torque limiter detecting the axial movement of the unit in event of an overload, providinga signal to cut off the air feed, to disconnect the drive. When overloaded, theCP Clutch has no connection between drive and driven sides providing along maintenance free service life. After the cause of the overload has beenremoved the clutch can be automatically re-engaged by resumming the airpressure. Standard finish on the clutches is black phosphate exterior, but cansupply in Nickel plated.

Method of OperationDuring normal operations, (fig. 1+2), the PC clutch transmits a backlash-freetorque, proportional to the air pressure, from the input hub(1) to the outputflange(18), through balls(16), forced by the air pressure on the movingflange(11) into the seats on the parts(1) and (18). A torque arm(5B) isrequired to avoid the rotation of the stator(5). When overload occurs(fig. 3),the input hub(1) and the output flange(18) disengage, and axial movementof the flange(11) against the air pressure activates the stop switch(14), whichgives a signal to cut off the air; input and output of the clutch are then disconnected. CP units can be used as a clutch. The air pressure can beswitched on or off, transmitting torque when on and remotely disconnectingthe drive when not. CP clutches must be engaged under no load conditionat slow speed or when stationary. Disengagement torque is proportional toair pressure, according to the torque/pressure diagram on the label on theclutch outer diameter. Filtered, oiled air kept at a constant pressure duringnormal operations will ensure the accuracy of the overload torque.

Series CP Pneumatic Clutches and Couplings Technical Features

ClutchClutch Torque Coupling Torque

MaxMisalignment Clutch Bore M Coupling Bore M6 Inertias kgcm2

Size Min Max Nominal Max Speed Axial Radial Angular Min Max Min Max Hub Type V Type WNm Nm Nm Nm mm mm deg mm mm mm mm Side Flange Coupling

V/W 20 3.8 47 35 70 5000 1.4 0.14 1 10 22* 8 28 0.28 0.17 3.07V/W 25 15 80 95 190 4000 1.5 0.15 1 12 25* 10 38 0.56 0.34 7.68V/W 35 25 180 265 530 2500 2.0 0.19 1 15 35* 14 55 2.12 0.90 37.01V/W 45 50 250 310 620 2000 2.1 0.23 1 20 45* 15 60 4.88 2.11 87.68V/W 50 90 550 310 620 2000 2.1 0.23 1 20 55* 15 60 10.37 5.02 87.97

Clutch A B C D E F G H J K L1 L8 L9 N P P5 P6 P7 R S T U V W X Y AA AB AE AF AGSize

20 68 56 47 6xM5 11 7 15 13 1/8” 5 85 85 148 65 76 70 55 - 4xM5 10 24 23 53 19 30 - 30 - 75 45 1025 82 72 62 6xM5 24 6 28 13 1/8” 4 104 105 169 82 90 85 65 - 4xM4 8 29 26 60 22 40 1.0 35 - 85 51 1535 102 92 80 6xM5 28 7 34 19 1/8” 4 125 126 194 102 115 115 95 85 4xM5 10 34 36 69 22 50 1.5 41 19 96 63 1545 123 110 95 6xM6 30 8 36 23 1/8” 5 133 135 219 122 130 135 105 95 4xM5 10 37 46 71 22 55 2.0 53 29 104 71 1550 151 139 110 6xM8 33 9 40 23 1/4” 6 151 153 247 140 160 157 105 95 4xM6 12 40 51 84 22 60 2.5 53 29 119 86 15

2

1

Fig.1

3

4

6 7 8 9

5

5B

10 11 12 13 14 15 16 17

18

19

2.giF

ENGAGED

3.giF

DISENGAGED

BASIC FORM, PIVType

ø N

ø P

ø U

V

R S JT

Y L1

HF

L8

Dø

Mø

Cø

Bø

A

WGK

E

X

WType

WITH LAMELLAR COUPLING, PILOT BORED

ø P

ø N

ø M

R S J

TY L1

L9

XAA

AB

ø U

ø P 5P 6P 7ø M

6

WV45°

AG

AFAE

Type W Type V


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Shady Lane, Great Barr, Birmingham,England B44 9EU

Telephone: +44(0)121 360 0155Sales Direct: +44(0)121 325 2500

Facsimile: +44(0)121 325 1079Email: [email protected]: www.crossmorse.com

Power Transmission ProductsRoller Chain DrivesTiming Belt DrivesSilent Chain DrivesClamping ElementsOverload ClutchesTorque LimitersMounted BearingsStieber FreewheelsShaft CouplingsSprag ClutchesTensionersSprocketsPulleysGears

OPC2009©T.D.Cross Ltd. 01/09

Your Local Stockist:

OPC2009

30088 Cross&Morse Overload Protection Clutches Brochure.qxd:aSC1 pp01.qxd 23/1/09 11:42 Page 2

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igoodyear

Typewritten text

SPROCKETS AUSTRALIA PTY LTD 216 WHITEHALL STREET. YARRAVILLE. 3013 P: (03) 9687 8177 F: (03) 9687 8527 E: [email protected] www.sprocketsoz.com.au

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